A startup called Primo Toys today began online and retail sales of its latest educational product, the Cubetto, a programmable wooden robot for kids as young as 3. The London startup, which is a graduate of the PCH Highway 1 accelerator and backed by Randi Zuckerberg, promises families and educators a screen-free way to teach coding basics to kids who can't yet read or write. Retailing for $225, the new Cubetto kit includes a wooden, cube-shaped robot on wheels, a wooden game board and blocks that fit onto it, a mat where the robot can roll around, and an activity book. Each block in the Cubetto kit represents a command you'd find in a simple programming language like LOGO, such as forward, right or left, and function. Kids place the blocks on the game board to create, if not really write, a program that moves the robot around different obstacles they can arrange on the mat.