Shape Up Mini Bulletin Board Author:Scholastic Students can construct, examine and explain simple machines to develop a deeper understanding of how they make work easier.\n\n# A 5-in-1 value!\n# Contains enough pieces to build a lever, pulley, inclined plane, wheel and axle, and wedge-all at the same time.\n# Modify machines with 4 included weights (two 5g and two 10 g) and 8 included rubber... more » bands to explore effort, force, load, motion and distance.\n# Labeled pieces assemble easily and separate to store.\n# Set of 63 pieces includes Activity Guide\n# Grades 5+« less