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.

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