Specializing in DIY robot kits and parts. New design aluminum parts, Arduino control system and easy-to-use sensors at makeblock.cc
Lego + 10. We were trying these out here at the Nanjing International School. It seems the sets are versatile like lego, but of course, you need tools to put them together. Also, because the instructions are not always super clear, there is greater thinking and problem-solving involved.