So you would like to get your children started in coding? The BionicTurtle has you covered. This 4-legged robot is made of acrylic plates and has 8 sensors. You also get an Arduino Nano board. The robot relies on an IR module to follow lines. It can also avoid obstacles.
BionicTurtle has Bluetooth for wireless control. The kit comes with files for 3D printing, manual, and everything you need to get started.