Geometry Display Magic

I purchased these to use in a home-school environment with a Kindergartner and 3rd grader. The have built with them, compared the shapes to each other, and compared them to 2-dimensional shapes. They are not made of super-sturdy material so I have asked them to play gently, but they have held up to several days of frequent use over 2 months. For the price-point, they are completely satisfactory and I’m glad I purchased them for hands-on learning.

My kiddo has a light box so I got these for him to use with it. I was thinking he would stack them up and probably end up breaking them in short order (he's 3). Much to my surprise he treats these with a great deal of respect. He has learned each of the shapes and he does stack them on his light table but every so carefully. He's so afraid of breaking one. I guess I can't complain and will probably get him another set because he is absolutely in love with them. I think possibly the colors. This is a really nice set. I purchased it because it wasn't as pricey as some of the other "blocks" for light boards and figured they would meet with an unfortunate end. They are still kicking around, he even saved the original box. I know it's not the intended use but if he continues to take care of them they will last until he is old enough to use them.

These are great. I've read people reviewing saying that theirs were falling apart out of the box and all I can think is they got a defective product. I bought two boxes and all of the shapes are fine. Most of the shapes have three pieces: the small, removable piece covering a hole (for filling) and then the removable side piece (for easier filling and cleaning) and finally the rest of the shape. They are all solid, but you are not paying for shatter resistant pieces of acrylic. This item would cost much more if you were. They are simply shapes made of thin, but not too thin Plexiglas.

Obviously, if they are in cold conditions for a while the plastic will deteriorate in strength and may crumple, but otherwise these are sturdy enough.

We bought these for my 2 year old son for Christmas because we made him a home made light table and needed some translucent items to put on top of it for the light to shine through. While these aren't recommended for someone only 2 years old, we bought them anyway and just have him play with our supervision. There are some small pieces that could come detached so that is why i believe this is for someone older. However, my 2 year old now knows what a pyramid is and what a rectangular prism is thanks to these. There are many different shapes and colors (no two are the same) which makes it interesting for teaching him what the shapes and colors are. We are very happy with our purchase.

I think they are slightly fragile. They are not toys, and cannot withstand that type of use, for sure. But! As a learning/teaching aid, these things are super cool! They are see through and have an opening, with plug, to fill each shape with water, and demonstrate the concept of volume! I liked them as an introduction into shapes, and when I got them, I saw that they were to teach all about volume too! By far, one of the coolest little sets to have in your classroom/home-school. They could stand to be a little more sturdy, and durable. I'm afraid to drop them. Also, should come with a graduated cylinder, for filing the shapes, and precise measuring. Needed em for science anyway, so I had to grab a pack of those.