Engino STEAM Labs：慣性原理，STEM建築套件，8歲以上（可搭建2款模型）

My 9-year-old actually asked to keep going after we finished the first model, which never happens with kits like this. The two-build setup is smart because by the second one he was explaining inertia to me instead of the other way around.

Building the two models made Newton’s first law click for my son—he kept testing the inertia car on different surfaces. The step-by-step instructions were clear enough that he built both without help.

My daughter actually asked to rebuild the inertia model a second time, which never happens with her other kits. The pieces snap together tight enough that nothing wobbles, and she was able to explain the concept to her little brother afterward.