Ensemble de machines simples

The gearbox is sturdy enough for my fourth grader to assemble without frustration. We spent a whole afternoon working through the lever and pulley together, and it really helped him grasp how force gets redirected.

My kids love that they can build all five machines at once in our science center, it keeps them busy for a solid hour figuring out how the levers and pulleys work together. The pieces feel sturdy enough for classroom repeat use, and the hands-on approach really makes the "work easier" concept click

I’m a teacher, and my fourth graders were immediately hooked when they saw the set up. It’s genuinely impressive that they can build all 5 simple machines at once, which made the "how do they make work easier" lesson click way faster than any textbook.