The Future of 3-D As people develop new products for 3-D printers everywhere, it won't be just the products themselves that change the landscape of things, but the concepts derived from the practice, such as crowdsourcing, a shift toward do-it-yourself manufacturing, and the she...
Many Montessori retailers sell a small set of wooden geometric shapes (often referred to as a “mystery bag”) which are meant for guessing shapes with a blindfold (or within the bag), but they can also be used as an economical alternative to the Geometric Solids (though the weight will b...