# UNITED STATES SCIENCE LESSONS

## US1 Weather

This eighth-grade science lesson focuses on weather maps. It is the 20th lesson in a sequence of 20 lessons on meteorology. The lesson is 56 minutes in duration. There are 25 students in the class.

## US2 Polymers

This eighth-grade science lesson is about polymers. It is the second lesson in a sequence of six lessons on matter. The lesson is 99 minutes in duration. This class meets once a week for 45 minutes and twice a week for 100 minutes. There are 35 students in the class.

## US3 Sunspots Pulleys

This eighth-grade science lesson is about sunspots and pulleys. The portion of the lesson on pulleys constitutes the ninth lesson in a sequence of 12 lessons on machines. The lesson is 51 minutes in duration. There are 33 students in the class.

## US4 Rocks

This eighth-grade science lesson is about rocks. It is the fifth lesson in a sequence of 11 lessons on the same topic. The lesson is 41 minutes in duration. There are 29 students in the class.

## 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.