Mathemagics – Mental Math Tricks iPhone App Demo

Amaze and delight others as you multiply, divide, and square at lightning fast speed. Learn and practice the tricks of mental math calculation in a fun and engaging application. Study any of the math tricks and then practice them as you progress through various levels of proficiency. Tease your brain with a quick practice session while waiting in lines, riding in the car, or on the plane. Only the basic math skills of addition, subtraction and simple multiplication and division are needed to achieve astonishing results. Students: Baffle your math teachers by providing answers faster than thought possible. Teachers: Inspire your students as you pull answers to math problems out of thin air.

Fuller Jitterbug Geometry – Jain Mathemagics

In this video, Jain shows Buckminster Fuller’s Jitterbug Geometry and how it can have pressure put on two parallel triangles in a way that creates a very cool “bouncing twist motion,” alternating the direction of the twist/spin each time it get squeezed. This motion-geometry “contains” the geometry for the Cubeoctahedron, the icosahedron, the octahedron, the 4 sided pyramid, and the tetrahedron. Very impressive. This is probably my favorite bit of knowledge about any geometry I have ever found. Enjoy. If you want to try this at home and buy the cube-octahedron with bendable vertexes, the same kind which was used in the video, check out Learn more about this and other geometries at: ~ Vid @ ~More Great Videos!@ ~Pix and Info @ ~ vid @ ~ vid @ I don’t own this video and if you like it, please check out and consider purchasing Jain’s DVDs at – I think this is from the 3-d solids DVD and you can watch the rest of this video on the DVD. Find out more about what is on the DVDs by watching the preview video for the DVDs at Thanks for viewing!