Our newest module expands the " engineering go power" of the base Structures module. Gears and chains (like the ones in bicycles) are simple machines. When students learn to design and build with gears they gain hands-on understanding of the principles of motion and work. Each activity is focused on solving real-world challenges using creativity and a problem-based learning approach. Includes 25+ free online, standards aligned lessons and activities. Requires Structures Module for building. Includes 503 colorful gears, chain links, cranks and axles.