Review on JOYIN Translucent Educational Construction Building Set for Learning & Education by Gavin Hernandez

I bought for my class so I was looking for something less expensive. Well you get what you pay for. This is a smaller diameter than regular marble ridges/marbles. It comes with small balls so it's ok but still not what I was hoping for. And it's a very brittle plastic. It's so easy my preschoolers accidentally break it. We've probably broken a quarter of the tubes already. Due to the smaller size and fragility, it's a bit harder for my preschoolers to work on their own. It's very unforgiving. They generally like it and I will let them use it until too many lives are destroyed. But I would recommend choosing a different product if buying for younger children. I couldn't imagine a three year old doing this on his own. More like 8 years.