{"product_id":"solid-geometry","title":"Solid Geometry","description":"\u003ch3\u003e\u003cem\u003eGeometry of the Platonic Solids and Geometry of the Cylinder, Sphere, and Cone\u003c\/em\u003e\u003c\/h3\u003e\n\u003cp\u003eEighth-grade teachers and middle school math teachers (sometimes one and the same!): this is a book you’ll want close at hand.\u003c\/p\u003e\n\u003cp\u003eHarry Kretz walks teachers step by step through a practical approach to building Platonic solids with a class. Along the way, he offers approachable ideas for introducing square roots and exploring the mathematics of other three-dimensional forms, including cones, cylinders, and spheres. His explanations bring straightforward clarity to material that can sometimes feel intimidating, making solid geometry accessible to teachers and students alike.\u003c\/p\u003e\n\u003cp\u003eThis is a particularly valuable resource for teaching geometry in a Waldorf school or bringing a hands-on, experiential approach to any middle school math classroom. The activities invite students to encounter mathematical ideas through building, observing, questioning, and discovering—not simply through memorizing formulas.\u003c\/p\u003e\n\u003cp\u003eNo fear or nervousness necessary! This book is a treasure chest of good ideas: simple to follow, engaging to learn, and clear to teach. Whether you are preparing an eighth-grade geometry block, enriching your Waldorf math curriculum, or looking for fresh ways to teach Platonic solids and solid geometry, Harry Kretz offers a pathway that feels both manageable and inspiring.\u003c\/p\u003e\n\u003cp\u003eWaldorf Publications\u003cbr\u003eISBN: 9781963686227\u003cbr\u003ePublished 9\/26\u003cbr\u003eHardcover\u003cbr\u003e60 pages\u003cbr\u003e44 b\u0026amp;w illustrations \u003cbr\u003e8.5 x 11+++Harry Kretz\u003c\/p\u003e","brand":"Verlag am Goetheanum","offers":[{"title":"Default Title","offer_id":54029173915962,"sku":"WP6227HK","price":27.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0232\/3919\/files\/Solid_Geometry_Geometry_of_the_Platonic_Solids_and_Geometry_of_the_Cylinder_Sphere_and_Cone.jpg?v=1788900816","url":"https:\/\/www.waldorfpublications.org\/products\/solid-geometry","provider":"Waldorf Publications","version":"1.0","type":"link"}