Hape Science Experiment Toolbox | Colorful Wooden 32 Experiment Kit, Fun Educational Science Kids Toy Set & Know-How Instruction App32 pieces, over 6 experiments & creations: This amazing 32 piece wooden toy includes everything you need. Kids four years and up will learn the science behind the experiments Steam education: this steam kit is great with loads of experiments! As you complete each one, you'll create a device that will teach you about scientific principles including persistence of vision, pulley drive system and lever principle App makes these experiments so easy: to