Review on Mathlink Educational Counting Learning Resources by Stoner Fulton

I bought these for educational purposes. The set contains ten dice in the colors red, orange, yellow, green, blue, pink, white, brown and black. Each 1 inch cube has a raised face that easily connects to any other (upside down) side of other cubes. The quality of the plastic is good, the pieces don't stick, but snap together and unplug easily without much effort (an adult can snap off two cubes with one hand). The corners are square but not too sharp to hurt. Even when the opposite corners of the block are squeezed together, it doesn't hurt compared to others. After 3 months of use (4 days a week) they are still like new (the holding power does not decrease). We store them in a gallon ziplock bag. At $9, you can't beat this deal. Too bad I didn't find them sooner.