Focusing on STEM concepts in a fun and engaging way, these sets are suitable for science fair projects or a quiet day at home. Along with the building components, each set features an activity book with instructions for readers 9 to 12 to test scientific theories and perform experiments.

This kit contains everything needed to build a working marble run nearly two feet high, complete with wheels, ramps, stops, and drops. It's more than just fun, however—young engineers can learn all about mechanics, friction, forces, and other scientific principles that relate to their marble run.