Engino探索STEM槓桿與連桿：9歲以上教育工程玩具（可組16款模型）

The way these models actually demonstrate levers and linkages is fantastic—my daughter grasped mechanical advantage after just a few of the 16 builds. The pieces click together solidly, and the booklet explains each concept clearly.

My son has already built half the 16 models and is constantly asking to see what each lever does differently—it’s kept him engaged for hours and teaches real engineering concepts.

The linkage models actually move the way they're supposed to, which kept my kid busy for a solid two hours on a rainy afternoon. Only gripe is that a couple of the pins fit tight enough that I had to help snap them in. Still, 16 builds is a lot of mileage for the price.