Engino發現STEM力學：輪子、軸與斜面套件（適合9歲以上，可搭建14種模型）

My 10-year-old built the ramp model and actually tested how the slope makes lifting easier—the instruction booklet explains it perfectly. He's hooked on the 14 models now, and I love that it's hands-on physics without screen time.

The build quality is solid, and the way the wheel-and-axle models demonstrate mechanical advantage really clicks for my kid. We’ve built three of the 14 models so far, and the instructions are clear enough for independent play.

My 10-year-old built the inclined plane model first and spent twenty minutes rolling a toy car down it, adjusting the slope each time to see how far it went. The pieces snap together tight enough that nothing wobbles, which matters when you're testing wheels and axles. Fourteen models means this won