heart
Solid of Constant Width
Geo-Sphere
Nonstop Sorting Machine
Bat Tracker Keeper
1" 1/4 Eyepiece ViewFinder adapter
Crank for Wimshurst Machine
S1B
Manipulative snap-together sprues to create polygons, polyhedra, molecules etc
Volumetric Nesting Cubes
Surface Development of a Truncated Cone
conic cone
Configurable Galton Board
Proof of the Pythagorean theorem using tangram
Torque tester for stepper motor
Gear Board
abc tiles
Circle Flower
Pentominoes for the MakerBotAcademyMath
MorphGraph
Binary coded decimal - BCD convertor
Empirical probability study
Poloh Calculator
TABLA REDONDA
Napier's Bones
Normal distribution sliced to show "68-95-99.7 Rule"
Bump Blocks: Counting and Addition Manipulatives
CoinCounter
Physical Proof For Geometric Problem
Pizza Manipulatives
Cartesian Plane Diagram
Wrap Up Key
Like Terms
Nut and Bolt
Unit Circle - manipulative for deriving the sine wave
Battle-shape
Cubes in Cubes
Operation Board
Series Puzzle
