Box D Simple Machines, Forces Watch gels grow as they

Watch gels grow as they absorb water

Hands-on building a "skateboard" and a catapult

Generous materials for 2 experiments for 30 students

and chemical reactions

Box D Simple Machines, Forces Watch gels grow as theyPhysical World Physics 2 Experiments, learning and experimenting with simple machines and forces. Hands on building a "skateboard" and a catapult. Generous materials for 2 experiments for 30 students, or 2 experiments for 60 students working with a buddy. Workbook and teacher materials included. 2 separate experiments designed to make students think differently as they draw similarities and differences between the interesting outcomes.