**Long Division Demonstration**

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**Pink Tower
Primary Level
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*Teaches Concepts of Shape and Size*

The pink tower has ten pink cubes of different sizes, from 1 centimeter up to 10 cm in increments of 1 cm. The work is designed to provide the child with a concept of “big” and “small.”

The child starts with the largest cube and puts the second-largest cube on top of it. This continues until all ten cubes are stacked on top of each other.

The control of error is visual. The child sees the cubes are in the wrong order. The successive dimensions of each cube are such that if the cubes are stacked flush with a corner, the smallest cube may be fit squarely on the ledge of each level.

**Initial Sound Picture Cards
Primary Level**

*Teaches Phonics and Pre-Reading*

Introduces the concept of phonics and pre-reading through colorful picture cards. The students match the cards with the letters and begin to visually associate letter sounds with their corresponding photo.

**The Binomial Cube
Primary through Elementary Level
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*Teaches Basic Algebra Concepts*

The binomial cube is a cube made up of the following pieces: one red cube, three black and red prisms, three black and blue prisms, and one blue cube. These eight prisms represent the elements of a mathematical equation,

or:

The pieces are stored in a box with two hinged opening sides. The color pattern of the cube is painted all around the outside of the box (except the bottom).

At the primary level, students learn to put the pieces together, matching size and color, learning physical relationships between each piece.

The material is revisited in the elementary years, when children learn formulas for finding the area of geometric solids and algebraic equations. They draw on their earlier sensorial experience to develop a deep understanding of the meaning of these equations and the language of mathematics.