Add the Pulleys & Cranks module to your Structures base module and students can explore how to make things that will haul, lift, slide and move up and down, all part of STEAM learning. Students can design hundreds of machines as they solve problems and create amazing inventions. They can even build zip lines that stretch more than 4 feet in length. Includes 25+ free online, standards aligned lessons and activities. Requires Structures Module for building. Includes 205 colorful pulleys, hooks, cranks and buckets.