US5 BLOOD
This seventh-grade science lesson is about the heart. It is the third lesson in a sequence of eight lessons on the circulatory and respiratory systems. The lesson is 45 minutes in duration. There are 33 students in the class.
| Time | Caption |
|---|---|
| 00:00:00 | Okay um, please um, write what's on the board, please. |
| 00:00:03 | Susan, what's up? Did you- |
| 00:00:05 | You're late. |
| 00:00:06 | Yeah. |
| 00:00:07 | Why are you late? |
| 00:00:08 | Because I had to talk to the P.E. coach. |
| 00:00:09 | Okay. All right. Go ahead and just go on by. There you go. It's all good. |
| 00:00:18 | All right, I'm going to go around and check your planners so please have it out for me. You need to have heart anatomy labeled in color. |
| 00:00:26 | Heart anatomy labeled in color. |
| 00:00:28 | Here you go, yeah. |
| 00:00:30 | Do we need to staple it? |
| 00:00:32 | That's a great question and let me address that in just a moment okay? |
| 00:00:35 | Please go ahead and write this, I'm going to walk around and thank you for writing it down. |
| 00:00:41 | Thank you for writing that down, thank you very much. Thank you. |
| 00:00:46 | Thanks John. |
| 00:00:48 | I like that, that's cool. |
| 00:00:51 | Good. Thanks (inaudible). |
| 00:00:53 | How are you doing today? Okay? |
| 00:00:57 | I think everybody's here. |
| 00:01:02 | Okay. Thank you. |
| 00:01:03 | I promise I will bring my planner on Monday. |
| 00:01:05 | Okay, just write it on there then. |
| 00:01:07 | Write it down in your planner. |
| 00:01:09 | Good, that's perfect. |
| 00:01:10 | There you go. |
| 00:01:12 | Happy teacher, happy teacher. |
| 00:01:17 | Here. |
| 00:01:20 | Thanks, that's great. |
| 00:01:22 | Okay, you can put your planner away. |
| 00:01:25 | Let me just- This uh, this sheet right here this (Blood Fun) sheet. |
| 00:01:32 | You do not have to staple this, this can be separate. |
| 00:01:37 | If you wrote on it then that's okay too, but um- if you stapled it then that's okay too. |
| 00:01:42 | But you don't have to staple it. I just need the sheet that has the answers. |
| 00:01:47 | So if you could make two separate stacks when you pass to the center isle. So Theo, you're going to make a stack of these |
| 00:01:54 | and you'll make a stack of the answer sheets and then you will walk them to the Home Fun Hotel in the back, period three. |
| 00:01:59 | Me? |
| 00:02:00 | Yeah you, you. |
| 00:02:01 | And Julie, would you collect also? And Hannah, would you collect and Neil, would you collect? |
| 00:02:05 | I didn't get the platelet part. |
| 00:02:08 | You didn't get it? |
| 00:02:09 | Okay we'll- we'll go over that. We probably won't go over it today, but we will go over it like in the next week. |
| 00:02:16 | Why not? |
| 00:02:18 | I don't know, I forgot it (inaudible) had it. |
| 00:02:20 | Okay, well you know, turn it in tomorrow for half, and the other thing is |
| 00:02:25 | half's better than nothing and you got- you got (bank) because you know, you've always turn in your assignments on time |
| 00:02:32 | and so, if you forget it once in a while its not going to hurt you that bad. |
| 00:02:35 | Did //did it have to be like that? |
| 00:02:36 | //Nice. |
| 00:02:38 | That's good no that's- that's fine. It could (do) smaller too but- |
| 00:02:42 | Miss Dupont, every time you talk, that little green light (inaudible). |
| 00:02:47 | Oh. |
| 00:02:48 | All right, pass them on down. Go ahead and put them in the basket, just make those two separate stacks. |
| 00:02:55 | Am I allowed to get water? |
| 00:02:56 | Yeah I'll get them for you. |
| 00:02:59 | They're not super duper cold, unfortunately, but- |
| 00:03:10 | I knew that was going to happen. |
| 00:03:14 | All right, what do we got? Let's go through the um- the cards. |
| 00:03:23 | Okay, uh Neil, will you run those back there please? |
| 00:03:27 | Thank you. You could put the um- put both stacks in the basket it just makes it easier for me sort out so. |
| 00:03:32 | All right. Right, thank you. |
| 00:03:36 | (inaudible) |
| 00:03:44 | All right, yeah. All right I have a spatula. Uh-huh. |
| 00:03:51 | All right, let's go through these cards. |
| 00:03:52 | First let's start off- oh by the way, if your back is to me right now, please turn and face me up here in the front thanks. |
| 00:04:01 | And um- so we're going to start off- you know which one's first, right? |
| 00:04:06 | The eleven organ systems are first, and so we're going to start with one. |
| 00:04:10 | E:00] |
| 00:04:12 | Two eyes. |
| 00:04:13 | Look at my muscles. |
| 00:04:15 | Three triangle is? |
| 00:04:17 | Integumentary. |
| 00:04:18 | E:00] |
| 00:04:19 | Four, four. |
| 00:04:20 | Cardiovascular. |
| 00:04:21 | E:00] |
| 00:04:22 | Cardio- vascular. |
| 00:04:23 | Five fingers is? |
| 00:04:24 | Nervous. |
| 00:04:25 | E:00] |
| 00:04:26 | Six, six is? |
| 00:04:27 | E:00] |
| 00:04:28 | //Reproduce or reproductive. |
| 00:04:28 | Seven up is? |
| 00:04:29 | E:00] |
| 00:04:30 | Digestive. |
| 00:04:31 | Eight octopus. |
| 00:04:33 | E:00] |
| 00:04:34 | //Urinary, that's my favorite. |
| 00:04:36 | Nine baseball is? |
| 00:04:37 | Respiratory. |
| 00:04:38 | E:00] |
| 00:04:39 | Ten hen is? |
| 00:04:40 | E:00] |
| 00:04:41 | Lymphatic. |
| 00:04:42 | And then eleven goal- |
| 00:04:43 | E:00] |
| 00:04:44 | Endocrine. |
| 00:04:45 | Which one, which one is the easiest for you to remember out of those? |
| 00:04:48 | Endocrine. |
| 00:04:49 | Really, endocrine? That's the hardest for me. |
| 00:04:51 | Seven up. |
| 00:04:52 | Seven up. |
| 00:04:52 | Urinary. |
| 00:04:53 | Urinary, urinary, that's the (inaudible) okay. |
| 00:04:56 | Stable internal environment is known as? |
| 00:04:58 | E:00] |
| 00:04:59 | Homeostasis. |
| 00:05:01 | What- what are the other numbers- what are the numbers on there? |
| 00:05:04 | Thirty-seven. |
| 00:05:06 | Thirty-seven. |
| 00:05:07 | Wait, wait, wait. |
| 00:05:08 | Thirty-seven. |
| 00:05:09 | Ninety-eight. |
| 00:05:10 | Thirty-seven. |
| 00:05:11 | It's the inside normal temperature but I- I'm waiting to hear something else, it's really important to science. |
| 00:05:16 | Ninety-eight- |
| 00:05:18 | Ninety-eight point six. |
| 00:05:19 | Fahrenheit. |
| 00:05:20 | Degrees Fahrenheit. |
| 00:05:21 | Degrees Fahrenheit, okay, degrees Fahrenheit. |
| 00:05:24 | Thirty-seven degrees Celsius. |
| 00:05:26 | Oh. Thirty-seven degrees Celsius. Now, why is that so very important that you put that degree Celsius... degree Fahrenheit? |
| 00:05:35 | Why would that be just so very important? Any idea, Eleanor? |
| 00:05:38 | No. |
| 00:05:39 | No idea? Okay. |
| 00:05:41 | Mia, any idea? I know you know. |
| 00:05:42 | I know (inaudible). |
| 00:05:44 | Wait. |
| 00:05:45 | Why? Why is it important that I have those two numbers on it- I mean those degrees Celsius or degrees Fahrenheit? |
| 00:05:51 | Because you might (inaudible). |
| 00:05:52 | What? One more time. |
| 00:05:53 | You might mix them up. |
| 00:05:53 | You might mix them up. |
| 00:05:54 | See 98.6 degrees Celsius could be very different. |
| 00:05:59 | It would be almost boiling and uh- |
| 00:06:01 | You'd be dead. |
| 00:06:03 | You know, that's why it is so important to write that down or to have that written down, if you're writing it down. |
| 00:06:08 | Major bones. Major bones. We're going to start with the top of our head which is called our? |
| 00:06:11 | Skull. |
| 00:06:12 | Cranium. |
| 00:06:13 | Skull and um- I'm looking at the answers back here. What is this? |
| 00:06:16 | E:00] |
| 00:06:17 | Mandible. |
| 00:06:19 | What is this? |
| 00:06:20 | Cheekbone. |
| 00:06:21 | Scapula. |
| 00:06:23 | Maxilla. |
| 00:06:24 | Maxilla okay? |
| 00:06:25 | Clavicle. |
| 00:06:26 | What's this one? |
| 00:06:27 | Clavicle. |
| 00:06:28 | Clavicle. How about this one? |
| 00:06:29 | Sternum. |
| 00:06:30 | And um, what about this one back here? |
| 00:06:33 | Scapula. |
| 00:06:34 | Scapula, scapula. |
| 00:06:36 | Sounds like spatula. |
| 00:06:37 | Okay. Sounds like spatula, huh? |
| 00:06:39 | What about this? These. |
| 00:06:40 | Ribs. |
| 00:06:41 | Ribs. Do your bones just have- //or does your ribs have- |
| 00:06:44 | //(inaudible) |
| 00:06:45 | Guy you know what I'm going to ask. |
| 00:06:47 | You say it all the time. |
| 00:06:48 | You're on the psychic hotline or something. |
| 00:06:51 | Okay, so if this is bone what else are your ribs made of? |
| 00:06:54 | Cartilage. |
| 00:06:55 | Cartilage, okay. Let's see, oh, hold up your arm and what is this bone called? |
| 00:07:00 | Radius. |
| 00:07:01 | Humerus. |
| 00:07:02 | This is your humerus, right and then what's this one? |
| 00:07:04 | Radius. |
| 00:07:05 | Radius. And what is this one? |
| 00:07:07 | Ulna. |
| 00:07:08 | Ulna. Exactly. |
| 00:07:09 | And go ahead and point to your vertebral column. |
| 00:07:12 | Back here. |
| 00:07:13 | Right here. And your pelvic girdle? |
| 00:07:15 | E:00] |
| 00:07:16 | And what about- |
| 00:07:17 | It's not nice to point. |
| 00:07:18 | It's not nice to point- Femur. |
| 00:07:20 | Right here. |
| 00:07:21 | Right here. |
| 00:07:23 | Don't. |
| 00:07:24 | Femur is right here. And then your patella? |
| 00:07:27 | Down here. |
| 00:07:28 | Is right here. And what's in the middle right here? |
| 00:07:30 | Tibia. |
| 00:07:31 | Your tibia. And then on the outside? |
| 00:07:32 | Fibula. |
| 00:07:34 | Fibula. And what did Steve come up with that reminds us of the difference between a tibia and fibula? |
| 00:07:39 | He did- |
| 00:07:40 | Something about (inaudible). |
| 00:07:41 | Wait, wait, wait, JP. Go. |
| 00:07:42 | A (fib) starts out small. |
| 00:07:44 | A (fib) starts out small and what about the musical instruments. That's a good one. |
| 00:07:46 | (inaudible) |
| 00:07:47 | Go ahead. |
| 00:07:48 | (inaudible) a tibia- a tibia is big like a tuba and the fibula is small like a flute. |
| 00:07:54 | Exactly okay. Good. You said it, not me. |
| 00:07:57 | All right, yeah. |
| 00:07:59 | Interesting fact: the temperature inside our mouth is like ninety-something degrees, and if you held a chicken's head in there |
| 00:08:06 | for like a week or two, you could cook it. |
| 00:08:12 | That would definitely be a slow cooker. |
| 00:08:16 | Ligaments do what? What do they do? |
| 00:08:18 | Connect bone. |
| 00:08:19 | Connect. |
| 00:08:20 | Connect. I just want to thank- thank all of you who are looking up here. |
| 00:08:24 | Won't mention any names. |
| 00:08:26 | Okay, so, ligaments connect bones, and soft flexible tissue is known as? |
| 00:08:31 | Cartilage. |
| 00:08:32 | Cartilage. Name one please that has cartilage? |
| 00:08:33 | //Ribs |
| 00:08:34 | //Bones. |
| 00:08:35 | //Ribs |
| 00:08:36 | //Nose. Ears. |
| 00:08:37 | Nose, ears, knees, shoulders. |
| 00:08:38 | Patella. |
| 00:08:40 | Patella. |
| 00:08:42 | Three times of joints we got this, which is? |
| 00:08:44 | Sliding. |
| 00:08:45 | And this? |
| 00:08:47 | (inaudible) //socket |
| 00:08:48 | //(inaudible) socket, that's right. |
| 00:08:49 | What's this one? |
| 00:08:50 | //Fixed- |
| 00:08:51 | //Cranium. |
| 00:08:51 | Oh yeah, fixed. Sorry. |
| 00:08:53 | What, yes? |
| 00:08:54 | My dad like tore a piece of cartilage out of his knee that was like the size of a quarter once. |
| 00:08:59 | E:00] |
| 00:09:00 | Did they have to go in and get it out? They get in there with these little, little (arthroscopy) and then they suck it out. |
| 00:09:06 | Ew. |
| 00:09:07 | Clean it out. |
| 00:09:08 | Sickening. |
| 00:09:10 | All right, wait, wait- let's move on, okay, and then we're going to come back- we'll come back. |
| 00:09:13 | Flex is what? |
| 00:09:14 | Shortening. |
| 00:09:15 | If flex is shortening, extend is? |
| 00:09:16 | //Lengthening. |
| 00:09:17 | //Lengthening. |
| 00:09:18 | Show me flexing. Show me lengthening. Good, great. |
| 00:09:22 | Connects muscles and bones is a? |
| 00:09:24 | Tendon. |
| 00:09:25 | //Tendon- |
| 00:09:26 | //Tendon. Is a tendon part of a muscle? |
| 00:09:26 | Yes. |
| 00:09:27 | Good. |
| 00:09:28 | It's a really skinny part. |
| 00:09:29 | Happy, happy. The skinny part, the cord. See it's like this or like this. |
| 00:09:34 | Ah that's gross (inaudible) |
| 00:09:35 | Isn't that gross? |
| 00:09:36 | Grody. |
| 00:09:37 | I look like a reptile when I do that, huh? Err. |
| 00:09:38 | You look like a turtle. |
| 00:09:39 | You look like a dinosaur. |
| 00:09:40 | (inaudible) |
| 00:09:42 | I know it's- I'm sorry, I don't mean to gross you out. |
| 00:09:44 | Hey look, I didn't flip my eyelid inside out, you should be thankful. |
| 00:09:48 | (inaudible) |
| 00:09:49 | Or do my eye trick, you know. |
| 00:09:50 | Do that- |
| 00:09:52 | That's not nasty. |
| 00:09:53 | (inaudible) |
| 00:09:56 | That's terribly wrong. |
| 00:09:57 | Did I (inaudible) my mascara. |
| 00:09:58 | I'll never look at you (inaudible). |
| 00:09:59 | Yeah, but you know what? A four year old would fall for it, that's fun. |
| 00:10:03 | (inaudible) |
| 00:10:05 | Not you guys, okay. |
| 00:10:07 | Three types of muscles we have found in the heart only. |
| 00:10:10 | Cardiac. |
| 00:10:11 | Cardiac. |
| 00:10:12 | Cardiac and um- |
| 00:10:13 | I thought it was cardio. |
| 00:10:15 | Well cardiac is cardiac muscle and how could you get this to be stronger? |
| 00:10:19 | Exercise. |
| 00:10:20 | Exercise, bobcat run, your favorite. |
| 00:10:23 | No thank you. |
| 00:10:24 | No. |
| 00:10:25 | Digestive tract and blood vessels. |
| 00:10:27 | Smooth. |
| 00:10:28 | Smooth. |
| 00:10:29 | I said smooth first. |
| 00:10:30 | Smooth is right- what are you doing? Oh oh- that's cool. |
| 00:10:35 | What? |
| 00:10:36 | He's going like this. Wait- |
| 00:10:37 | Here, watch. |
| 00:10:38 | No, I don't like it. I hate //it. |
| 00:10:39 | //He's sticking his finger in his ear- |
| 00:10:40 | Okay, let's just- you know when you have a boring childhood like I did |
| 00:10:45 | then you come up with all kinds of little fun games //like that to distract yourself. |
| 00:10:47 | //This is terribly distracting for my learning experience. |
| 00:10:49 | Okay so smooth muscles. Do you have to think about moving your smooth muscles? |
| 00:10:54 | No. |
| 00:10:55 | No, your brain does it automatically, it's a- it's a good thing. |
| 00:10:58 | They're involuntary. |
| 00:10:59 | It's like (inaudible). |
| 00:11:01 | All right you know the last one's, attached to your bones, wwhich is? |
| 00:11:02 | Skeletal. |
| 00:11:03 | Skeletal muscles. Can you please name one example of a skeletal muscle? |
| 00:11:07 | Biceps. |
| 00:11:08 | Biceps, triceps, quadriceps, hamstrings, okay. |
| 00:11:12 | (inaudible) |
| 00:11:13 | Levers give- |
| 00:11:14 | Leverage. |
| 00:11:15 | You always say that! You can't use the word. |
| 00:11:18 | Leverage. |
| 00:11:20 | (inaudible) |
| 00:11:21 | Levers give? |
| 00:11:22 | Volume. |
| 00:11:23 | Can you see through? Here, let me give you a hint. |
| 00:11:25 | Mechanical advantage. |
| 00:11:27 | Mechanical advantage, so that helps you do work. And it doesn't mean that it has to be a machine like- |
| 00:11:35 | like that runs on electricity or gasoline or something. |
| 00:11:39 | It just- a machine is something //that helps- |
| 00:11:41 | //(inaudible) |
| 00:11:43 | Check this out. A machine is a- a machine is something that helps you do work. |
| 00:11:48 | Respiratory. |
| 00:11:50 | All right. |
| 00:11:51 | //Respirator- |
| 00:11:52 | //Okay, so it helps you do work and uh- |
| 00:11:55 | That's why they call- sometimes they call the human body a machine. |
| 00:11:59 | The best machine. |
| 00:12:01 | The best machine, yeah. |
| 00:12:03 | (inaudible) |
| 00:12:04 | An animal. |
| 00:12:05 | Parts of a lever. |
| 00:12:06 | Leverages. |
| 00:12:07 | (inaudible) |
| 00:12:13 | If- if you said- I don't know what you said, but if you said any of these three things, you're right. Okay. |
| 00:12:20 | (inaudible) |
| 00:12:21 | Hey, did you notice that I have arrows and stuff on this? |
| 00:12:25 | Yeah. |
| 00:12:26 | I got an arrow pointed down like this and why? |
| 00:12:29 | Because the (inaudible). |
| 00:12:30 | //(inaudible) |
| 00:12:31 | //Because the load has mass and then the effort. |
| 00:12:35 | You are the effort. |
| 00:12:36 | You are the effort or the machine is and then- |
| 00:12:39 | (inaudible) |
| 00:12:40 | Fulcrum's the pivot points, right? It's the part that doesn't move that much. |
| 00:12:45 | So let's look at some examples. Oh- |
| 00:12:46 | (inaudible) |
| 00:12:48 | You know that- you that uh, there are three classes of levers right? How many classes of levers are there? |
| 00:12:58 | Three. |
| 00:12:59 | Three. Okay, so there's three classes of levers and they're determined- the rule of classifying levers is what? |
| 00:13:07 | Oh, what's in the middle. |
| 00:13:09 | Whatever is in the middle. So- |
| 00:13:12 | All you have to ask yourself is what's in the middle and that will help you to determine what kind of full- what kind of lever it is. |
| 00:13:22 | Okay, so check this out: here's a first class lever and we know that the word //first begins with the letter? |
| 00:13:29 | //(inaudible) |
| 00:13:35 | F. |
| 00:13:36 | So what's in the middle? |
| 00:13:37 | Fulcrum. |
| 00:13:38 | Fulcrum. That's right. |
| 00:13:39 | Darn it! But I knew this one. |
| 00:13:42 | Okay, let me ask you individually. Ken, what's in the middle of a first class lever? |
| 00:13:46 | The fulcrum. |
| 00:13:47 | Ding, ding, ding, ding, ding. |
| 00:13:49 | Okay, so when you're on "Who wants to be a Millionaire," you can thank me. |
| 00:13:53 | All right (inaudible) so first, //here's a F first, |
| 00:13:56 | //(inaudible) |
| 00:13:58 | second class lever what's in the middle? |
| 00:13:59 | (Load). |
| 00:14:00 | Okay hold up your L. Okay, we know that there's two digits in the number two. |
| 00:14:07 | One, two- and if you pull them out and it makes an L and the L stands for? |
| 00:14:12 | Load. |
| 00:14:13 | Load not loser. Not learner, load in this case. |
| 00:14:17 | (inaudible) |
| 00:14:18 | How do you make the E? |
| 00:14:19 | (inaudible) |
| 00:14:20 | Your L's like this Miss Dupont. |
| 00:14:22 | (inaudible) |
| 00:14:23 | Well you know that L is for learner because we don't say loser and it's near- it's near failure leads to success |
| 00:14:30 | because whenever you fail your one step closer to learning what you need to learn. |
| 00:14:34 | Now it's waxed, you guys because when it gets really warm in here it's kind of sagged a little bit, //so I'll have to fix it later. |
| 00:14:39 | //(inaudible) |
| 00:14:43 | Third class lever has what in the middle? |
| 00:14:44 | Effort. |
| 00:14:45 | Effort. |
| 00:14:46 | Okay, we know this is third class- make an E. |
| 00:14:48 | Effort. |
| 00:14:49 | Effort. |
| 00:14:50 | A wheel barrel. |
| 00:14:51 | You can do that too, but this is easier for me. |
| 00:14:53 | (inaudible) a broom |
| 00:14:54 | That's easier for me. Okay, a broom is an example of one. In fact let's look at some levers right now. |
| 00:15:00 | Pliers, broom, and wheel barrow. |
| 00:15:01 | Yes, this is from my very own home. That's right. It's a //spatula. |
| 00:15:05 | //Spatula. |
| 00:15:06 | And it- what- when would I use particularly this spatula? |
| 00:15:09 | (inaudible) |
| 00:15:10 | Cooking. |
| 00:15:11 | Cooking. |
| 00:15:12 | Cooking but- |
| 00:15:13 | Hamburgers. |
| 00:15:14 | Hamburgers, but where are you- where are you usually make hamburgers? |
| 00:15:16 | (inaudible) |
| 00:15:17 | On the barbeque, so why would it have such a long handle? |
| 00:15:20 | So you don't burn yourself. |
| 00:15:21 | Don't I don't burn myself. And it gives me more leverage too. |
| 00:15:24 | So let's- let's think about- all you have to do is look at this and decide where the three parts of the lever are. |
| 00:15:30 | You need to decide where the fulcrum is, where the load is where the effort is. |
| 00:15:34 | Okay, well we know where the load is, right? The hamburger right here //okay, so where would the effort be? |
| 00:15:37 | //Effort on top. |
| 00:15:38 | You. |
| 00:15:39 | The effort would be me, and then where would be the part that moves the least amount? |
| 00:15:43 | E:00] |
| 00:15:44 | The bottom. So this is the pivot point. So if the effort is in the middle- |
| 00:15:49 | Third. |
| 00:15:50 | I'm sorry, if the effort is in the middle it is a? |
| 00:15:53 | Third class lever, okay, so this is a third class lever. Also if I was to do some sweeping with it that would also be- |
| 00:15:59 | If I decided to play baseball, spatula baseball or- |
| 00:16:02 | Ha, that would be cool. With hamburgers. |
| 00:16:04 | Thanks for laughing, spatula golf. All right, lacrosse. |
| 00:16:10 | Let's move on to this one. These are skissor- scissors. |
| 00:16:14 | Skissors. |
| 00:16:15 | And they have the- where is the pivot point of the scissors? |
| 00:16:20 | E:00] |
| 00:16:21 | The middle, right here, this little red dot. |
| 00:16:22 | (inaudible) |
| 00:16:23 | So, we already answered our question. The middle is the fulcrum, so what class lever is it? |
| 00:16:26 | E:00] |
| 00:16:27 | First class lever. Effort, effort- |
| 00:16:30 | Ow. Load, okay? It's painful. |
| 00:16:32 | Did you cut yourself? |
| 00:16:33 | No I didn't. |
| 00:16:34 | Okay this- this- |
| 00:16:35 | (inaudible) |
| 00:16:36 | Yeah, it's a nut cracker. And if I had a pistachio nut or something or my fingers in here ow, ow, ow where is the load? |
| 00:16:45 | (inaudible) |
| 00:16:46 | The load is where whatever your trying to hurt is and then the fulcrum would be this pivot point right here. |
| 00:16:53 | Yeah. |
| 00:16:54 | And then the effort //is here. |
| 00:16:55 | //Effort. |
| 00:16:58 | Yeah most of the time, huh, in this case. |
| 00:16:59 | Check this out, Lester. |
| 00:17:00 | (inaudible) |
| 00:17:01 | So if the load is in the middle, |
| 00:17:03 | (inaudible) |
| 00:17:04 | So if the load's in the middle, which class lever is it? |
| 00:17:07 | Second. |
| 00:17:08 | Second class lever beautiful. Thank you. |
| 00:17:14 | All right, um, I just want to tell you a little story about something that happened to me in college okay? |
| 00:17:21 | (inaudible) picture. |
| 00:17:23 | No it's like a story map in a way, okay and- |
| 00:17:26 | That's like that new //(inaudible) |
| 00:17:27 | //You know I like to share things about myself with you and tell you boring stories so this is a boring story. |
| 00:17:34 | When I was in college I had an RA on the floor- on my floor, my dorm floor that I lived. |
| 00:17:40 | What's an RA? |
| 00:17:42 | A RA stands... nobody knows, huh? Resident assistant and that's a person who is in charge- //they get paid- check this out. |
| 00:17:53 | //(inaudible) |
| 00:17:55 | They get paid a little extra money, and they are in charge of what goes on- on the dorm floor. |
| 00:18:01 | So, for instance, if I'm having trouble with my roommate and we're in an argument about something that my RA might help us out uh- by you know, |
| 00:18:11 | talking to us if I- uh something is wrong with our room like the carpet is torn up or something. |
| 00:18:16 | I would tell her and she would get somebody to fix it. Okay so I went to my RA because I was feeling really blue. |
| 00:18:24 | I was feeling really //depressed. |
| 00:18:25 | //Oh, that's why it's blue. |
| 00:18:26 | And you know, I'd worked really hard, and I was just really- I just- I was stressed out |
| 00:18:32 | and I was just really, extremely blue and I went to my RA and so she said, |
| 00:18:36 | "You know Kerry, you ought to- you ought to take a trip somewhere, you ought to take a vacation. Just get away from it all." |
| 00:18:43 | So she said "You know, I have an RV and I can lend it to you." |
| 00:18:48 | So I went to my RA and she gave me her RV but she said what you have to do first is you have to go put some fuel in it. |
| 00:18:56 | Oh, and then you went to LA. |
| 00:18:57 | So then- get- you're getting ahead of me. |
| 00:19:00 | Okay, so then I got some //fuel, |
| 00:19:01 | //(inaudible) |
| 00:19:03 | I got some fuel and then I went to L.A. |
| 00:19:05 | Then you went to Vegas. |
| 00:19:06 | Sin city. |
| 00:19:07 | Then lost wages. |
| 00:19:09 | Then I went to "Lost Wages," or Las Vegas, and I drove all around Las Vegas- I went everywhere. |
| 00:19:15 | Did you gamble? |
| 00:19:16 | Now, I'm not a big gambler but I do like to play the arcade games. |
| 00:19:19 | (inaudible) |
| 00:19:20 | Okay, arcade games are fun. |
| 00:19:21 | I like New York-New York a lot, but they're really expensive, so I usually end up at Circus Circus. Or there is another one the- |
| 00:19:27 | (inaudible) |
| 00:19:28 | The castle one what's- |
| 00:19:29 | Harrah's. |
| 00:19:30 | (inaudible) |
| 00:19:32 | Excalibur. |
| 00:19:33 | Excalibur, that's it. |
| 00:19:35 | I said it first. |
| 00:19:36 | Okay, okay yeah, you're right. I'm sorry I didn't hear. |
| 00:19:39 | So- so then I went from L.A. to Las Vegas, and I played a bunch of games and I- I was having a great time |
| 00:19:45 | going all over the whole body of Las Vegas, //but then I- check this out. |
| 00:19:50 | //(inaudible) |
| 00:19:52 | I spent all my money on arcade games and video games and you know that dance? |
| 00:19:56 | (inaudible) |
| 00:19:58 | That dance thing. I'm not very good at it, but I really- I'm glad no one saw me because- okay well anyway I lost all my money |
| 00:20:06 | and I came back feeling pretty bad. |
| 00:20:09 | This isn't //(inaudible) |
| 00:20:10 | //A little bit better but uh- because I'd gone away. |
| 00:20:13 | But I'd lost all my money so um- I was feeling blue again, but it was a big learning for me. It was really, really good. |
| 00:20:18 | (inaudible) |
| 00:20:20 | Is that a true story? |
| 00:20:21 | All right. |
| 00:20:22 | That's the heart. |
| 00:20:23 | That's my story. |
| 00:20:24 | Yesterday- |
| 00:20:25 | What does that have to do with anything? |
| 00:20:27 | I don't know. |
| 00:20:28 | Can somebody tell me about the story again. Where did I first go? |
| 00:20:32 | To your RA. |
| 00:20:33 | I went to my RA, then where did I go? |
| 00:20:35 | To your RV. |
| 00:20:37 | Then I got the RV, but before I took on my trip I had to get? |
| 00:20:39 | Fuel. |
| 00:20:40 | Fuel. |
| 00:20:41 | Why did you go to L.A. though? |
| 00:20:42 | Okay, then after I got the fuel, where did I go? |
| 00:20:46 | L.A. |
| 00:20:47 | And then where did I go? |
| 00:20:48 | Las Vegas. |
| 00:20:49 | Las Vegas. |
| 00:20:50 | Why did you (inaudible)? |
| 00:20:51 | (inaudible) |
| 00:20:53 | I don't know. |
| 00:20:54 | This is quite pointless. |
| 00:20:55 | Cardiovascular. |
| 00:20:56 | Genius class. All right, All right. |
| 00:20:58 | Yesterday we looked at uh- we looked at Bill Nye, and Bill Nye mostly talked about what substance? |
| 00:21:04 | The heart. |
| 00:21:05 | Blood, we talked about //blood. |
| 00:21:07 | //Yeah, 'cause it says //on the top of the sheet. |
| 00:21:08 | //Lub dub, we talked about the heart we didn't finish, but we will. |
| 00:21:11 | No, but uh we talked about the heart. Let me ask you some questions. How many liters of blood are in your body? |
| 00:21:18 | Five. |
| 00:21:19 | About five okay. How many, how much, how many milliliters of white blood cells? |
| 00:21:24 | //Three. |
| 00:21:25 | //One-half. |
| 00:21:26 | Half. |
| 00:21:27 | A half. |
| 00:21:28 | No- no. How many milliliters of white blood cells? |
| 00:21:30 | Five. |
| 00:21:31 | Five, okay. When you give blood when you donate blood about how much do you give? |
| 00:21:37 | Half a liter. |
| 00:21:38 | About half a liter exactly. |
| 00:21:39 | That's a lot of //blood. |
| 00:21:40 | //Okay, about one of those water bottles full. Okay, great. |
| 00:21:43 | Please find out- this is a group of four, right here, that's a group of four, that's a group of four, that's a group of four, |
| 00:21:49 | that's a group of five, and that's a group of four, that's a group of four, that's a group of four. |
| 00:21:52 | This is a group of three. Okay, so you need to find out, the person with the longest hair needs to decide between your group of four |
| 00:22:01 | who is going to get out a piece of scrap paper. Piece of scrap paper. |
| 00:22:07 | (inaudible) |
| 00:22:08 | Please go ahead and get it out. |
| 00:22:22 | You have the longest hair. You decide or you get it out. Get out- just get out a piece of scrap paper, that's good. |
| 00:22:31 | Okay, so, raise your hand if you have the scrap paper, raise your hand if you have the scrap paper. |
| 00:22:37 | Where's your scrap paper? Kathryn's going to get it out? Okay you can put your hand down. |
| 00:22:43 | (inaudible) |
| 00:22:44 | Hey, are you on there? I don't think so. |
| 00:22:48 | Ken do you have a scrap paper? |
| 00:22:49 | No. |
| 00:22:50 | Does anybody back there? You do, Hannah? Okay. |
| 00:22:53 | All right. This is your mission for the next 98.6 seconds. |
| 00:23:00 | You are going to talk about in your group and just- it doesn't matter whether you're right //or not- |
| 00:23:06 | //The structure of (loops). |
| 00:23:08 | Looks. That word says "looks." |
| 00:23:11 | The structure of- what you think the structure of the heart is //wait, wait, wait. |
| 00:23:16 | //Oh I say the- |
| 00:23:19 | What you think, your group- is a structure of the heart and you're going to jot that down. |
| 00:23:26 | Shh, shh, shh and then the second thing is the function. What it does- like, what it has to do. |
| 00:23:33 | So structure and function, 98.6. Is that right? |
| 00:23:38 | Yeah. |
| 00:23:39 | Yeah, 98.6 seconds. Just jot down person with the scratch paper. Ready, go. |
| 00:23:46 | What? |
| 00:23:47 | Write it down. |
| 00:23:53 | Miss Dupont, these people weren't listening. (inaudible) I'm on a journey with myself. Shoot. |
| 00:24:00 | Okay, so, what can you do to get them to tell you things? |
| 00:24:04 | I can motivate them with my talking voice. |
| 00:24:06 | Or you can ask them- |
| 00:24:07 | Nicely, to- |
| 00:24:08 | Or ask them questions. Say, "Alicia, what do you think?" |
| 00:24:15 | Alicia. |
| 00:24:17 | (inaudible) what do you think about that (inaudible) |
| 00:24:19 | Miss Dupont is- |
| 00:24:20 | Wait- Go ahead. Write that down. |
| 00:24:22 | (inaudible) are actually orange. |
| 00:24:23 | Good. We've got- we have some stuff written down. |
| 00:24:26 | Hey, in the last class they said, they said- they said um- they said that the heart was about the size of a fist. |
| 00:24:34 | Could that be something you could write down? |
| 00:24:35 | Yeah. |
| 00:24:36 | //Yeah. |
| 00:24:37 | //Yeah, and that's what I wrote. |
| 00:24:38 | Well, isn't your heart actually orange? Because I was watching like a- they had like an open heart surgery that I saw on TLC, and it was orange. |
| 00:24:45 | Yeah, it can be kind of that color. |
| 00:24:46 | That's because of the inside //fluids. |
| 00:24:47 | //But check- hey, right here, Karen's got some things she wants you to write down. |
| 00:24:52 | (inaudible) |
| 00:25:05 | What do you got... so far? |
| 00:25:08 | It- it has four chambers and pumps blood throughout your body. |
| 00:25:12 | It's about the size of your fist, and one side pumps blood to your lungs, and the other to the rest of your body. |
| 00:25:18 | Miss Dupont, what's that one word in the heart- Miss Dupont. |
| 00:25:22 | It's like (left to right). It starts with an A. |
| 00:25:23 | (inaudible) |
| 00:25:25 | Artichoke. |
| 00:25:27 | Ventricle and what. |
| 00:25:28 | Do you know, (inaudible)? |
| 00:25:29 | Huh, me? |
| 00:25:30 | Yeah. |
| 00:25:31 | I- I'm afraid I don't. |
| 00:25:32 | Steve might. What's the A? in one of the chambers? |
| 00:25:38 | You're going to find that out. |
| 00:25:40 | It's like (inaudible). |
| 00:25:42 | Okay I'm looking around seeing you have some good stuff on your paper. |
| 00:25:49 | (Quit) messing around. |
| 00:25:51 | Good. |
| 00:25:59 | All right let me ask you a question. Why would I have you do an activity like this? |
| 00:26:06 | I'm just kind of stepping out of the- the like, teaching mode right now and why would a teacher- |
| 00:26:13 | why on earth would a teacher have you do something like this right now? |
| 00:26:16 | Because (inaudible). |
| 00:26:17 | Why, why? |
| 00:26:18 | So we can kind of like, gather the //information (that we already) know. |
| 00:26:21 | //Shh. Kathryn's talking. |
| 00:26:23 | So we can learn more. |
| 00:26:24 | Okay so, so in fact this is what education's is all about whether you have a teacher or not. |
| 00:26:28 | It's from going what you know- from what you know already, to maybe what you don't know or knowing more. |
| 00:26:35 | Okay. And is it okay for you to write something on that paper and it be completely off base? |
| 00:26:40 | Yes. |
| 00:26:41 | Yeah //because- |
| 00:26:42 | //Because you're learning something. |
| 00:26:43 | Is a guess, is a guess a form of questioning? |
| 00:26:47 | Yes. |
| 00:26:48 | And is it, remember all learning starts with a? |
| 00:26:49 | Question. |
| 00:26:50 | (inaudible) |
| 00:26:51 | //Question. |
| 00:26:52 | //Hypothesis. |
| 00:26:53 | Or a hypothesis or prediction. |
| 00:26:54 | We're learning about scientific method in social studies. |
| 00:26:55 | You are? |
| 00:26:56 | We're like always (inaudible). |
| 00:26:57 | Up top. |
| 00:26:59 | Oh, don't give Ken a high five. |
| 00:27:00 | (inaudible) |
| 00:27:01 | Blood vessels are red. |
| 00:27:02 | Okay so let's look up here, let's up at the screen and were going to learn some stuff. |
| 00:27:07 | (inaudible) |
| 00:27:08 | What did you say? Ken has a song? |
| 00:27:10 | Yeah. |
| 00:27:11 | Yeah. |
| 00:27:12 | Okay. |
| 00:27:13 | Oh- they lub and dub and push out the blood. |
| 00:27:17 | Do you get it? Cause lub dub, and they push out the blood. |
| 00:27:22 | I like it a lot, I like it. I like it a lot. I think it's good, Ken. I always told you this is my genius class. |
| 00:27:30 | Nine. |
| 00:27:31 | Eight. |
| 00:27:33 | E:00] |
| 00:27:34 | //This is so pointless. |
| 00:27:35 | four, three, two, |
| 00:27:36 | Oh, he hates the counting. |
| 00:27:39 | But it's fun. |
| 00:27:40 | One, whoo! |
| 00:27:42 | (inaudible) |
| 00:27:43 | This is so exciting. |
| 00:27:45 | Miss Dupont, can I turn off the lights? |
| 00:27:47 | Hang on just a sec. |
| 00:27:48 | I asked first. |
| 00:27:49 | I got to focus. It just takes moment. |
| 00:27:52 | Can I turn off the lights Miss Dupont? |
| 00:27:54 | (inaudible) |
| 00:27:56 | Hey Lester. |
| 00:27:57 | Yes. |
| 00:27:58 | I used the scientific background thing. |
| 00:28:00 | I found it when you told me that and I- now I have all these really cool sounds and it's awesome. Thanks. |
| 00:28:07 | Miss Dupont, where did you get that? |
| 00:28:09 | Where did I get what? |
| 00:28:10 | That scientific thingy. |
| 00:28:12 | I don't want to turn the lights out. I want to- |
| 00:28:13 | Yeah you do. |
| 00:28:14 | (inaudible) |
| 00:28:15 | Close the blinds. |
| 00:28:17 | I will. |
| 00:28:20 | Okay, it was on the computer already. |
| 00:28:23 | Okay, this is called, "Brain Pop." And it's got a whole bunch- it has a whole bunch of um, different films on it. |
| 00:28:29 | Play the movie. |
| 00:28:30 | This film is on the heart, and um- |
| 00:28:34 | So you just want to listen to this. |
| 00:28:35 | And see what you can come up with as far as confirming or correcting your information. |
| 00:28:45 | Here we go. Oh yeah it's not on yet. |
| 00:28:49 | Lub dub. |
| 00:28:51 | So you um, have a letter for me. |
| 00:28:53 | Oh, a love letter. And it's not even Valentine's Day. |
| 00:28:57 | Of course it's a valentine, look at the envelope. |
| 00:29:03 | Oh. 'Dear Tim and Moby, sometimes when I'm playing hockey my heart beats so loud that I can hear it. |
| 00:29:08 | What's that all about? Signed, Lana. |
| 00:29:11 | All right, hearts, cause- cause the letter was about the heart. |
| 00:29:14 | All right. All right. This is an important question, so I want to be sure we understand a few things about the heart. |
| 00:29:19 | The heart is a powerful muscle in your chest about the size of your fist. |
| 00:29:24 | The heart muscle is different from other muscles. |
| 00:29:26 | It never gets tired, and it pumps blood through your body so that oxygen and nutrients can get to the organs and tissues that need them, |
| 00:29:31 | and so that cell waste products can be removed. |
| 00:29:34 | The heart is made up of two pumps, one on the left side and one on the right. |
| 00:29:38 | Each of the pumps is made up of an atrium and a ventricle. |
| 00:29:41 | Okay so um- let me just- |
| 00:29:43 | (inaudible) |
| 00:29:47 | This right here, what is this called this is a? |
| 00:29:49 | Atrium. |
| 00:29:50 | And this is an atrium, and what are these? |
| 00:29:52 | E:00] |
| 00:29:53 | These are ventricles. Okay? Now they're going to back up a little when I press this again. |
| 00:29:59 | The heart is made up of two pumps, one on the left side and one on the right. |
| 00:30:02 | Each of the pumps is made up of an atrium and a ventricle. |
| 00:30:06 | The atria bring blood to the heart and passes it to the ventricles which pump the blood back out. |
| 00:30:11 | This pumping cycle produces your heart beat. |
| 00:30:13 | (inaudible) |
| 00:30:14 | Wait a minute, wait, wait I got to just- uh-oh. |
| 00:30:16 | I didn't mean to go that far back. But- |
| 00:30:21 | The heart is a powerful muscle in your chest. The heart is made up of two pumps one on the left side and one on the right. |
| 00:30:26 | Sorry. |
| 00:30:27 | Each of the pumps is made up of a atrium and a ventricle, The atria bring blood into- |
| 00:30:31 | Okay wait, wait. This is where I want to stop. Why on earth is the right side here blue and that's red? |
| 00:30:39 | Oxygen. |
| 00:30:40 | What, what, what, what, what? Nicola. |
| 00:30:43 | Because it has oxygen //(inaudible). |
| 00:30:44 | //No. |
| 00:30:45 | This one has oxygen? |
| 00:30:47 | What about this one? |
| 00:30:49 | (inaudible) |
| 00:30:51 | (inaudible) |
| 00:30:52 | So this does not- |
| 00:30:55 | Oh chaos wait- wait- //wait- |
| 00:30:59 | //Wait- wait- //hang on. |
| 00:31:00 | //Settle down now. |
| 00:31:02 | Deep breath. |
| 00:31:03 | Quiet. |
| 00:31:05 | (inaudible) |
| 00:31:07 | The red side looks like it has- it has more oxygen. |
| 00:31:11 | No. |
| 00:31:12 | Instead of the blue. |
| 00:31:13 | This side? |
| 00:31:14 | //Yes. |
| 00:31:15 | //This side has more oxygen it's red. |
| 00:31:16 | We- this is actually it's our right but considered the left atrium because the heart is in someone- |
| 00:31:21 | remember we talked about this yesterday. |
| 00:31:23 | And then what about this one Ken? |
| 00:31:24 | The- the blood is blue before the oxygen gets to it. |
| 00:31:29 | Bueno, okay. |
| 00:31:31 | It's without oxygen. |
| 00:31:32 | It's without oxygen. |
| 00:31:33 | The heart is made up of two //(inaudible) |
| 00:31:35 | //Oh no. |
| 00:31:36 | This pumping cycle increases your heart. The heart is made up of two pumps. |
| 00:31:39 | One on the left side and one on the right. |
| 00:31:40 | Each of the pumps is made up of an atrium //and a ventricle. |
| 00:31:42 | //Sorry. |
| 00:31:44 | The atria bring blood to the heart and pass it to the ventricles which pump the blood back out. |
| 00:31:49 | This pumping cycle increases your heart beat. Here's how it works. |
| 00:31:53 | When your brain sends a signal to the heart to beat, the right atrium fills with used blood that has been through the body |
| 00:31:57 | and needs to go to the lungs for more oxygen. |
| 00:32:00 | The left atrium fills with fresh blood from the lungs that is ready to got back through the body. |
| 00:32:04 | The atria squeeze blood into the ventricles below. |
| 00:32:07 | When all of the blood is in a ventricle, the valve between the ventricle and atrium closes and the ventricle pushes the blood out of the heart. |
| 00:32:14 | The right ventricle pumps used blood to the lungs. The left ventricle pumps fresh blood into your body so it can circulate. |
| 00:32:20 | Did you see how it does it simultaneously? |
| 00:32:21 | That's so cool. |
| 00:32:23 | Isn't it. |
| 00:32:24 | The right ventricle pumps used //blood to the lungs. |
| 00:32:25 | //Sorry. |
| 00:32:27 | //Stop. |
| 00:32:28 | //into your body so it can circulate. |
| 00:32:31 | It takes about one minute for blood to circulate through your entire body and back and to your heart to be pumped out again. |
| 00:32:35 | What's he doing? |
| 00:32:36 | He's writing without any hands. |
| 00:32:38 | So now we know how your heart beats. |
| 00:32:39 | He's writing to the girl about what he's doing. |
| 00:32:40 | Shh. Shh. |
| 00:32:42 | The process of pumping blood is one that your body does automatically over and over again //no matter what you're doing. |
| 00:32:46 | //Listen, you guys. Shh. |
| 00:32:49 | Right. Lana asked about feeling her heart beat during sports. Your heart rate increases when you run and play and even when you're nervous. |
| 00:32:55 | Think about it. When your bodies working hard, the muscles tire out quicker. |
| 00:32:59 | Your heart needs to beat faster to get oxygen through your body so that you can keep going. |
| 00:33:03 | The faster and harder your heart is beating, the louder it sounds. Well I hope that answers your question Lana. |
| 00:33:11 | Another one. |
| 00:33:13 | Dear Tim. You are nice and I like you. |
| 00:33:18 | Ah. |
| 00:33:19 | That's the robot. |
| 00:33:21 | (inaudible) |
| 00:33:24 | Let's take the quiz. |
| 00:33:25 | We'll take it later. |
| 00:33:26 | No. Now. |
| 00:33:27 | No. |
| 00:33:29 | Now. |
| 00:33:31 | Settle down. |
| 00:33:32 | Okay check this out. This is blood pumping through your heart. This is just a diagram of course. |
| 00:33:37 | Okay, so you can see, you can see right here this is blood that's coming from the body. |
| 00:33:44 | This is called the inferior vena cava. |
| 00:33:46 | And this is the superior vena cava and this comes from- this pumps blood from your head and your shoulders |
| 00:33:54 | and this pumps blood from your body and it goes into your right atrium and then it goes down into the right ventricle, RV. |
| 00:34:07 | Then it goes out the pulmonary artery to the lungs and gets fuel. |
| 00:34:19 | Then it comes in the pulmonary vein to the LA, //left atrium. |
| 00:34:26 | //Oh... that's why you did that. |
| 00:34:28 | Then it goes to the left ventricle, then it goes out the aorta. |
| 00:34:33 | These three arteries carry it up to the head, and these- //this |
| 00:34:37 | //And that's //why they were blue and red. |
| 00:34:38 | //artery carries it down to the bottom all over the body. |
| 00:34:42 | They look like arms going like this. |
| 00:34:44 | That was your story. |
| 00:34:45 | Miss Dupont, you're really smart. |
| 00:34:47 | No you //are. |
| 00:34:48 | //And that's why it was red and blue. |
| 00:34:50 | Okay this is blue because it doesn't have oxygen in it and this is red because it does. |
| 00:34:56 | Now, let me ask you something, what's the difference between an artery- |
| 00:34:59 | Now, vein is not up here, but what's the difference between an artery and a vein? |
| 00:35:04 | It all has to do with coming and going to the heart. Lester. |
| 00:35:07 | I think an artery doesn't pump blood. |
| 00:35:10 | Okay that is- we're- we're going in the right direction. Give me more pieces of the puzzle. |
| 00:35:14 | Kathryn. |
| 00:35:15 | Okay, I think the artery has blood that goes in to the heart, and then the veins are blood that comes out of the heart. |
| 00:35:22 | Okay, we're getting closer and closer, you're exactly on the right track. |
| 00:35:26 | Are our veins blue because they don't have oxygen in them yet? |
| 00:35:28 | Partly. |
| 00:35:32 | (inaudible) |
| 00:35:33 | Wait, wait, time out listen. Nicola, go ahead. |
| 00:35:35 | Arteries take the blood (inaudible) body, and the veins bring it back into your heart. |
| 00:35:39 | Okay, so anytime blood is leaving, bye-bye, the heart it does it with an artery. |
| 00:35:47 | Check this out- and every time it goes into the heart we call it a vein. |
| 00:35:54 | Oh. |
| 00:35:55 | Wow. |
| 00:35:56 | So veins carry blood back to the heart and an artery takes it away bye-bye, okay question, comment? |
| 00:36:04 | How is it when you cut yourself, but you don't like cut- cut your like, vein or anything why is it- how do you bleed? |
| 00:36:12 | If your veins, if your veins like- say you just like barely cut your hand like this? |
| 00:36:19 | Yeah. |
| 00:36:20 | Why do you bleed? |
| 00:36:21 | Why do you bleed? |
| 00:36:22 | Because it- but it's not touching your veins or arteries. |
| 00:36:25 | Okay great question and this goes back to Bill Nye yesterday. |
| 00:36:28 | Not only do we have arty- artery and veins, but what's the bridge in between those two things? |
| 00:36:32 | Tissue. |
| 00:36:33 | Muscles. |
| 00:36:34 | Okay, tissue but something- I'm thinking //a very small little blood vessel? |
| 00:36:36 | //Ligaments. |
| 00:36:39 | Capillaries. |
| 00:36:40 | Capillaries. Remember there's- I think Bill Nye said this yesterday. |
| 00:36:44 | Each cell is only about four cells away, three to four cells away from a capillary. |
| 00:36:50 | So that means that they're all really close to capillaries. |
| 00:36:53 | Oh, so- |
| 00:36:54 | Because if your body didn't have access to that blood, Ken, what couldn't it get that it needs? |
| 00:36:58 | Oxygen. |
| 00:36:59 | Oxygen that's right. |
| 00:37:02 | Question? |
| 00:37:03 | What come- does the uh- does the- like the pump that reloads like- |
| 00:37:09 | the blood in the heart to be pumped back out, is that the soft like (inaudible)? |
| 00:37:15 | It's the- the valves. The valves are opening and closing and that's what causes the lub dub. |
| 00:37:21 | Lub dub. |
| 00:37:23 | Hannah then Jonas. |
| 00:37:25 | Does the blood //heal your cuts- |
| 00:37:26 | //Thank you. |
| 00:37:28 | when you get cut. |
| 00:37:29 | Does the blood- okay. What happens when you- what happens eventually when you bleed when you get a cut? What happens? |
| 00:37:36 | It clots over and then it forms a scab. |
| 00:37:38 | What helps it to clot, Steve? |
| 00:37:40 | Platelets. |
| 00:37:41 | The platelets, platelets help it to clot. |
| 00:37:43 | I read that in my (inaudible) |
| 00:37:44 | But if you have really thin- That's why people that have really thin blood, if they get a little cut, they can bleed to death. |
| 00:37:50 | Yeah like hemophiliacs, a lack of clotting factor, blood disorder. |
| 00:37:54 | Jonas, you're next, go ahead. |
| 00:37:56 | Please turn to page 492 while Jonas is asking his question or making his comment. |
| 00:37:59 | (inaudible)? |
| 00:38:01 | //Is the (inaudible) the lub is the biggest pump right? |
| 00:38:03 | //Yes. |
| 00:38:08 | Yes. |
| 00:38:09 | Is that coming from the side of the heart without the oxygen or with the oxygen? |
| 00:38:15 | It's the big push- it is from the right atrium. |
| 00:38:24 | What's this? |
| 00:38:25 | (inaudible) |
| 00:38:26 | Oh. |
| 00:38:28 | All right, this looks complicated and it's not. |
| 00:38:32 | This is really pretty simple but if you look at it first off, it kind of like, "whoa," it's a lot of stuff there. |
| 00:38:38 | What you'll need to do is you're going to follow the arrows. |
| 00:38:43 | Everybody should have their own book, 492. Everyone should have their own book, 492. |
| 00:38:51 | All right, this is what you're going to do; we're going to trace the flow of blood. We'll start with the RA up here, the right atrium. |
| 00:38:57 | So you're going to put your index finger on this right atrium, this white arrow. Please everybody do that now. |
| 00:39:02 | On the right atrium. It's right here. |
| 00:39:05 | I know. |
| 00:39:06 | Check with your table partner. |
| 00:39:07 | All right. |
| 00:39:08 | Follow the white arrows down from the right atrium RA, to the RV, which is the right ventricle up and out of the heart. |
| 00:39:18 | Remember anytime it's leaving, it's called an artery and since it's going to the lungs, we call it pulmonary. |
| 00:39:25 | The pulmonary artery is going to the lungs, it picks up fuel, swings back around, is carried back through the pulmonary vein. |
| 00:39:38 | //Wait a minute- |
| 00:39:39 | //(inaudible) |
| 00:39:40 | Wait- wait- wait- wait- what? |
| 00:39:41 | (Isn't your heart) right above your lungs though? |
| 00:39:44 | Um, actually it's right in between. |
| 00:39:46 | (inaudible) //going up? |
| 00:39:47 | //Now, hey- |
| 00:39:48 | (inaudible) a diagram. |
| 00:39:49 | Oh- oh- um, yeah, I'm sorry, that's right. This is a diagram and everything has been kind of pulled out. |
| 00:39:53 | I have a better diagram for you on an another piece of paper, but the main thing I want you to see here is |
| 00:39:58 | I want you to see the flow and I want you to follow it. |
| 00:40:01 | Trace it with your index finger. |
| 00:40:03 | Okay, please take your index finger- |
| 00:40:06 | We'll start over again. Hold up your index finger, bring it down on to the white arrow in the right atrium. |
| 00:40:12 | Is that the blue? |
| 00:40:13 | Yes. |
| 00:40:14 | In the blue, yeah. |
| 00:40:15 | Go to the- just look, look up here... right ventricle up and out to the lungs sweeps back around to the left atrium, |
| 00:40:24 | left ventricle, L.A., Las Vegas, up out of the aorta and then it goes through the whole systemic circulation. |
| 00:40:35 | And then it's used and then it travels back. Trace that path three times, ready go. |
| 00:40:45 | If you want to make race car sounds, you can. |
| 00:40:47 | (inaudible) |
| 00:40:49 | You've got to be kidding. |
| 00:40:51 | (inaudible) |
| 00:40:55 | Okay great. Yes. |
| 00:40:57 | I'll bet if you asked someone that wasn't really smart to find the aorta //(inaudible). |
| 00:41:02 | //Okay pit stop, pit stop //pit stop, go. |
| 00:41:03 | //Everyone be quiet. |
| 00:41:06 | I said if you asked someone really, like, not that smart, to try to find the end of this looping cycle |
| 00:41:12 | they'd probably keep on doing it over and over until they found it. |
| 00:41:15 | Tricky. |
| 00:41:16 | I could find the end. |
| 00:41:18 | (inaudible) I can't find my transparencies. What did I do with them now? Oh well. |
| 00:41:26 | Oh yes, here they are. |
| 00:41:27 | Okay Hannah, this is what I want to show you. |
| 00:41:31 | This- this is on the- oh, okay, |
| 00:41:34 | It's backwards. |
| 00:41:35 | That's upside down. |
| 00:41:36 | Okay, let's see how uh- gifted you are now. No, no that's a joke. All right. All right. Here we go. |
| 00:41:44 | [ phone ringing ] |
| 00:41:45 | Oh no. |
| 00:41:46 | Can I pick it up? |
| 00:41:48 | Yeah. Yeah. Just say, "Dupont's classroom." |
| 00:41:49 | Okay look up here. Check this out. We have um- we have the right atrium- |
| 00:41:57 | (Isn't that the left) atrium. |
| 00:42:01 | You've been coached. |
| 00:42:03 | (inaudible) to the office. |
| 00:42:09 | Okay, no problem. Thank you. Okay, bye. |
| 00:42:12 | Thank you. |
| 00:42:13 | No problem. |
| 00:42:14 | Jonas- Jonas, they need to see you in the office. |
| 00:42:16 | Okay. |
| 00:42:21 | Okay check this out, check this out. Let's start with the right atrium like we do with RA. |
| 00:42:28 | Watch, //watch, watch. |
| 00:42:29 | //(inaudible) |
| 00:42:31 | Yeah, sorry. |
| 00:42:32 | I don't know what they need you up there for but- |
| 00:42:34 | Okay, it comes down here to the right ventricle, swings out now watch this Hannah; check this out. |
| 00:42:39 | Lungs. |
| 00:42:40 | Lungs. |
| 00:42:41 | Picks up oxygen in the capillary beds of the lungs, swings back down to the pulmonary vein, goes back to the where am I? |
| 00:42:50 | Oh, here is the left atrium, left ventricle, and then out here okay? |
| 00:42:55 | Capillary beds. |
| 00:42:57 | Please, um, turn toward your table partner and go through the four, |
| 00:43:02 | the four chambers of the heart in order and if you don't have a table partner please turn to, go ahead and turn to these two. |
| 00:43:11 | Ben and Lester, go through the four chambers. |
| 00:43:13 | What four chambers? |
| 00:43:14 | The four chambers of the heart. |
| 00:43:28 | Pass it down. |
| 00:43:39 | I'm done, Miss Dupont. |
| 00:43:40 | Okay, all right. |
| 00:43:42 | Do we close up our books? |
| 00:43:43 | Wait- wait- wait- |
| 00:43:44 | Yeah, close your books. |
| 00:43:45 | Your skeleton's jaw is off. It's like- |
| 00:43:47 | I know. It's a little (inaudible). |
| 00:43:49 | Do you want these? |
| 00:43:50 | Pass your books down the center isle, quietly. |
| 00:43:52 | No. You can keep it. It's a piece of scrap paper. |
| 00:43:56 | Here you go. |
| 00:44:00 | Quietly. |
| 00:44:07 | All right, um... what is the first chamber of the heart it goes to? |
| 00:44:13 | Right atrium. |
| 00:44:15 | Right atrium. One person knew that. Let me ask you again. |
| 00:44:18 | What is the first chamber that the blood goes to from the body? |
| 00:44:22 | Right atrium. |
| 00:44:23 | Right atrium and then to the? |
| 00:44:24 | Ventricles. |
| 00:44:25 | Ventricles. Then it goes to pick up? |
| 00:44:27 | Fuel. |
| 00:44:28 | Fuel or? |
| 00:44:29 | Oxygen. |
| 00:44:30 | Oxygen and then it goes back in? |
| 00:44:31 | Left atrium. |
| 00:44:33 | Left atrium, LA, and then to the? |
| 00:44:35 | Left ventricle. |
| 00:44:36 | Left ventricle and then where does it go? |
| 00:44:38 | To the body. |
| 00:44:39 | To the body. Exactly. |
| 00:44:41 | All right, this is what needs to happen. |
| 00:44:43 | Please put these papers in a safe place where your going to be able to find them tomorrow easily. |
| 00:44:48 | We're going to go through these tomorrow. Tuck your chair on your way out. |
| 00:44:52 | Do we have to color the back side of this too? |
| 00:44:54 | Actually you don't need to color at all, just bring it back tomorrow okay. Have a good one. |
| 00:44:58 | So it's not homework? |
| 00:44:59 | It's not home fun. No. Why would I want you to have fun at home? |