Montessori School of Denver in Colorado, has a board called "Culture: Science, Zoology, Geography.." There are some fabulous pins and ideas on this board. We fell in love with this simple playdoh depiction of the earth crusts and layers! Earth Day, geography
The first time I made a batch of playdough for my son I was amazed. Amazed that the recipe worked, amazed at how quick and easy it was and, mostly, amazed at how much nicer it was than the kind that comes in a can. Smooth, supple and soft, even months later. If you're still buying dough in a can, I urge you to convert. And there's a whole world of art supplies you can make in your own kitchen - some I've never even heard of like flubber, glurch, gak and oobleck.