Bests & Worsts Reviews from Amazon

We got these because my son's preschool teacher recommended them, but then someone else bought him Magformers, which are waaay better. These tend to fall apart more easily and the big problem with them is hard to explain, but here goes: they are straight-edged with 90-degree corners, which (with the tendency to fall apart) makes it difficult to build more complex shapes, like regular polyhedrons. The other day, my son and I made a regular icosohedron out of magformers and it even withstood a little tossing around, and that would never happen with these. Because of the shape, they fit together best at right angles to each other. I would skip these and get magformers instead.