Drawing Machine - Linkages

My 9-year-old spent a solid hour just swapping the connecting rods around to see how the motion changed, which is exactly the kind of tinkering I was hoping for. The cardboard pieces snap together firmly and survived being taken apart at least six times already.

The way the linkages transfer motion is so satisfying to watch in action – my kid spent an hour tweaking the arm lengths to make different patterns. Really makes you think about how mechanics work.

My 9-year-old spent a solid hour just swapping the linkage arms around to see how the motion changed, which never happens with his other kits. The cardboard pieces snap together tight enough that nothing wobbles, and I actually learned something about pivot points myself.