The third generation of Lego's best-selling programmable robotics platform is here, and features more sensors, motors, and flexibility than ever. Plus mobile apps.

Some great Labor Day promotions on the LEGO Store, but they're only available for Insiders (you can sign up for free).

The Lego WeDo system also has available software to program the robots, an activity pack to guide learning and an excellent guide for teachers to facilitate teaching.

Thomas Alva has developed Edison, a palm-sized, bright orange, programmable robot compatible with Lego bricks that is intended as an affordable introduction to programming and robotics for youngsters.