Gears! Gears! Gears!(R) 機器人工廠STEM套組 - 79件

My nephew spent a whole afternoon connecting the gears to make a crane that actually wobbled. The pieces click together securely, and it’s great for teaching cause and effect.

The gear mechanism is really smooth, so the robots actually spin and wobble when you turn the crank. It kept my kids busy for a solid hour trying different combinations on the base plates.

My 5-year-old figured out how to connect the gears to make the whole tower spin on his own, and he's barely put it down since. The 79 pieces give you enough to build a few different robots at once, though we've already lost a couple small connectors under the couch.