I've been having some fun with cutting larger 3D models using Slicer 360. It allows import of .STL files and slices them into a variety of interlocking slices. The models below were made with interlocking slices, however you can also do stacked slices, such as the terrain models I created last year.
I can see the benefit of having bigger 3D shapes made out of little material, and the challenge or puzzle of slotting them all together. I think kids of all ages would get a kick out of it. However, I can see the limitation being the actual 3D .STL file -- creation using Blox 3D Junior is limited in its 3D formation and Tinkercad is a bit too tricky for the younger ones. I guess you start creating in Blox 3D Junior and then import into Tinkercad for further refinement but that level of app smashing is probably too much for our kids.
