Save K'NEX Education - Simple Machines Deluxe Set

79520 Features: -Simple Machines Deluxe Building Set.-For 40 people and up.-Perfect for science fairs. Specifications: -3,480 pieces, including one 12 volt motor to build 60 fully-functioning models.-57 extensive lesson plans. Collection: -Education collection. Effort/Effort & Resistance Arm/ Fulcrum Wheel & Axle/Slope/Lever Classes/Block & Tackle Friction/Gear Ratio/Force/Resistance Fixed-Moveab