52 Weeks of Math Activities Week 11: Soma Cubes I love Martin Gardner’s work and books that brought math to so many people in a fun and engaging way. One of the topics he covered was Soma Cubes. This week, learners can create and play with this wonderful seven-piece puzzle that was invented by Mr. Piet Hein during
52 Weeks of Math Activities Week 3: Sonobe Octahedron Octahedra are such fun shapes. This week we are going to learn an important fold in origami that can be used to make so many mathematical shapes, puzzles, and works of art. We are going to learn Sonobe. Below is a video of how to create the basic fold and