Help Botley set off some crashing chain reactions with this accessory set! It contains everything kids need to set up STEM-inspired obstacle challenges for Botley to navigate. Following the included Activity Guide, kids create 9 obstacle challenges filled with falling dominoes, rolling balls and swinging hammers, or design their own courses using critical thinking skills. Once everything's in place, kids simply code Botley with the desired steps, press transmit on the remote programmer, and watch him get moving! Each obstacle course run also introduces hands-on lessons in early physics concepts including force and motion. Size: 22.9 x 22.9 x 10.2 cm. For ages 6 to 7.