Magic Blocks Kit is used to explore basic mathematical operators and concepts using wooden blocks. Contains 9 rectangular blocks of steadily increasing height, pen, labels, and instructions. Hands-on activities aid in the conceptualization of abstract mathematical ideas
Model, Pyrite Crystal, The mineral pyrite, or iron pyrite, also known as fools gold, is an iron sulfide with the chemical formula FeS2, metallic luster and pale brass-yellow, contains 40-1 inch balls, Dimensions: 24 x