A follow-up to the best-selling original Robotics: Smart Machines kit, this version focuses on wheeled robots. Like the original, this kit also gives kids a simple, fun, and customizable introduction to robotics that lets them build eight motorized machines controlled by programs and an ultrasound sensor. Kids code the programs using an easy, visual programming app on a tablet or smartphone, which connects to the robot models via a wireless Bluetooth connection. The ultrasonic sensor works on the same principle as sonar, sending out sound waves, which bounce off objects. The sensor interprets the echoes returning to it, and from this detects objects in the path of the sensor. Using the app interface, you can program the robots you build to behave based on the feedback coming from the ultrasonic sensor. After you have learned how the technology works, you can build and program your own robots using the kit’s 233 building pieces. A full-color, 64-page step-by-step illustrated manual helps kids assemble all of the models and teaches them about robotics in the real world. The visual programming language allows you to command the robots’ motors to move at different times, different power levels, in different directions, and in response to the data from the sensor. Details: STEM robotics kit 233 pieces Includes 8 experiments Includes 64 page manual Requires 3 AA batteries (not included) Works with app on tablet or smartphone (iOS or Android) For ages 8 through 14