Remember Brain Pop username and password is wwptgms. Brain Pop on Scientific Method - http://www.brainpop.com/science/scientificinquiry/scientificmethod/ How Batteries Work - http://www.youtube.com/watch?v=KkRwuM4S8BQ Frictional Force 1 (mass) - http://www.youtube.com/watch?v=bOjgpbZ8VpM Frictional Force 2 (surface area) - http://www.youtube.com/watch?v=idYX7kkRqbs Frictional Force 3 - (mass) - http://www.youtube.com/watch?v=9w-ORd14Ucs Frictional Force 4 - http://www.youtube.com/watch?v=C7NPD9W0kro Energy Transfer - Types of Energy - http://www.youtube.com/watch?v=i6e-KrNCe_E Types of Energy - Interactive Lab!!! http://www.glencoe.com/sites/common_assets/science/virtual_labs/E04/E04.html Work (mass x distance) - https://www.youtube.com/watch?v=PD7a1EWjsTc Types of Energy - https://www.youtube.com/watch?v=NKJifzlOSoQ Potential and Kinetic Energy - https://www.youtube.com/watch?v=T5WJoup-RD8