|Middle School - Life Science - Prentice Hall- Pearson|
|Topics of learning Science for 7th and 8th graders . Grade 7 and Grade 8 - Middle School The sub-topics for this group is based on a book " Prentice Hall Science Explorer " by Pearson. http://www.phschool.com/webcodes10/index.cfm?wcprefix=chk&wcsuffix=1000&area=view|
Big Guns: The Muscular System - CrashCourse Biology #31
Hank tells us the story of the complicated chemical dance that allows our skeletal muscles to contract and relax. Crash Course Biology is now available on DVD!
If youve ever wondered how your muscles work, this movie about the Muscular System has the answer!