This Thames & Kosmos kit provides a customizable introduction to robotics with eight buildable motorized machines. It has an app interface to program the robots to behave based on the feedback coming from the ultrasound sensor. The kit includes a full-color 64-page step-by-step illustrated manual for assembling all of the models. The manual also teaches about robotics in the real world. Requires a tablet or smartphone running iOS or Android (not included).