Sony has launched a smaller, more affordable version of Koov, its candy-colored coding toy for kids. A Koov kit contains blocks, motors and sensors kids can put together to create robots and small machines they can program. It can make classes a lot more fun and ignite kids' interest in science, technology, engineering, art and math (STEAM) subjects. But it also costs $520 a set, which could be too much for schools with little funding or teachers who pay for classroom supplies out of pocket. The new Koov Trial Kit only costs $250.