簡單機械STEM實驗與模型組裝套組

We've already built the lever and wheel-and-axle models, and my son loves seeing how they lift heavy objects using minimal force. The instructions are clear enough for him to work mostly on his own.

My 9-year-old built the pulley model on his own and then spent an hour explaining how it lifts things with less effort. The pieces snap together well and actually hold, unlike another kit we tried that fell apart mid-build. Twenty-six models means he won't run out of things to make anytime soon.

The lever and wheel-and-axle models actually move the way they're supposed to, which kept my 8-year-old busy for a solid two hours. Twenty-six builds means we haven't run out of projects yet.