K'NEX(R) 簡単な機械入門：てこと滑車

The included building instructions made it easy for my 8-year-old to construct the lever models on her own. Watching her test how moving the fulcrum changes the force needed was a great hands-on lesson.

My kids spent the whole afternoon building the lever models and testing how different fulcrum positions changed the effort needed. The pieces click together solidly enough that the finished constructions don't fall apart when they get excited. This is exactly the kind of hands-on investigation the d

This kit has held my third grader's attention for hours as she figures out how each lever and pulley actually moves real weight around. The included hands-on models make abstract concepts like mechanical advantage click into place without any screen involved.