Review on Sustainable Building with PlanToys: Rubberwood Non-Toxic Solutions by Dwayne Shavers

I bought these stones for my 1 year old son. He's been throwing them away for two weeks now and they're still perfectly intact. They seem to be very durable, which bothered me a little at first. He likes to look through the colored water and say oh-oh-oh. I like to put her in the sun when she shines into our playroom and has a colored reflection on the floor. He loves trying colors and chasing. It's great that you can learn each color individually and then combine two colors into a new one! I know my son is not old enough to understand this concept but we will prepare them when he grows up. In the meantime, we will work on studying the blue, red, and yellow colors. Overall I am very happy with this purchase. They're a little pricey, but I sincerely believe we'll have lots of fun and educational use with them.