The manipulative is a three dimensional version of a multiplication chart, shaped similar to a Connect 4 board. The base … Continued
Grade: Middle School
Conic Sections
This is a model of conic slices that is obtained through reverse-engineering parts of a cone, with its dimensions determined … Continued
Galileo’s Parabolic Demonstration Apparatus
At the Galileo Museo in Italy there is an apparatus which can be used to demonstrate Galileo’s theory of parabolic … Continued
Measuring Cups
The Measuring Cups is a set of five nesting, polygonal containers with flat bottoms and tops. These measuring containers hold, … Continued
Decimal Snake
The body of the Decimal Snake consists of 10 pieces. Each piece is equally partitioned into 10 parts. Once the … Continued
Fraction Orange
The Fraction Orange is a sphere partitioned into two hemispheres; one hemisphere is further partitioned into fourths, eighths, and sixteenths … Continued