* CREATE STEM-inspired chain reaction challenges for Botley with this 40-piece accessory set.
* Includes falling dominos, swinging hammers, rolling balls, and more physics-inspired accessories
* Master the Activity Guide's 9 challenges, or build your own chain reactions
* Works with other Botley accessories!, Ages 5+
* Super STEM Skills: From science and technology to engineering and math, STEM learning help kids build critical thinking and other skills they need for success in school and beyond!
