Winner of awards from Purdue University and Creative Child Magazine, this cool STEM kit lets kids build a real working FM radio. As they stack and snap the blocks, they learn about electricity, current, and voltage. When the radio is done, they can listen to their favorite station. Compatible with other building brick sets, kit may be used to build 120 different projects. 46 parts. Takes 3 AA batteries (not included). Ages 8 and up.