Required Materials
Gr 5 forces acting on structures: Pulleys - 6-8 per group, String - single strand or non-frayig, Building materials, such as popsicle sticks, chopsticks, skewers, scrap paper, fettuccine noodles, hot glue, cloth scraps, Small notebook and writing utensil per group, Large container to hold supplies per group, Testing equipment, such as fan or flowing water, Tape