Includes everything you need to build 11 machines that whirl, flip, punch, and cruise! 58 LEGO elements including cross axles, technic bricks, plates, pegs, gear wheels, and more! Make, experiment, and play! This activity kit will have you building 11 machines including a gravity powered car and a wacky boxing robot. The fun doesn’t stop once you’ve completed all of the projects in the book - open-ended prompts will inspire you to continue experimenting with your own designs and modifications!