Get future engineers on track for STEM learning with this model train set of the future! They'll enjoy the focused work of building this 186-piece gyroscope balancing robot while learning about mechanical assembly. Once built, kids experiment with building 26 different monorail tracks and create their own from over 80 parts! They'll be wonderstruck watching physics concepts in action like rotational motion, acceleration, and angular momentum. Recommended for ages 8 and up with help, or 12 and up for independent play. Requires 2 AA batteries, not included.