Searning Resources Simple MachinesSet of 5 Machin Simple Machines Set, Build all 5 simple machines at once in physical science centers...Ages 10-12, Build all 5 SimpleMachines at the same time! Students can construct, examine and explain simple machines to developa deeper understanding of how they make work easier. Contains enough pieces to build a lever, pulley, inclined plane, wheel and axle, and wedge-allat the same time; Modify machines with 4 includedweights (two 5g and two 10 g) and 8 included rubber bands to explore effort, force, load, motion and distance; Labeled pieces assemble easily and separate to store; Set of 63 pieces includes ActivityGuide; Grades 4+.