Studying levers couldn't be more exciting! Learners build their own catapults and test the results as they make adjustments to the fulcrum. They compete against other groups to create the most accurate apparatus.

Online textbook reviews fundamentals of chemistry and physical science via slideshow presentations, notes, and videos. Materials for classroom activities engage students in inquiry-based, hands-on investigations covering molecular...

Online textbook reviews fundamentals of chemistry and physical science via slideshow presentations, notes, and videos. Materials for classroom activities engage students in inquiry-based, hands-on investigations covering molecular...