# Mathematics

## A1-43: CROSSING RODS

Purpose: Visualize three-dimensional figures

## A1-42: DRAWING PUZZLE - HALF CUBE

Purpose: Visualize three-dimensional figures

## A1-41: DRAWING PUZZLE - INTERSECTING RODS

Purpose: Visualize three-dimensional figures

## A1-32: VOLUMES - SPHERICAL VS CYLINDRICAL

Purpose: Illustrate a volume perception paradox
• #### A1-01 MASSES - KILOGRAM AND POUND

Compare the weights of one kilogram (SI unit of mass) to one pound (English system unit of force) Read More
• #### A1-02: MASSES - CHROME PLATED

Show a collection of calibrated masses Read More
• #### A1-03: DENSITY - VARIOUS BRICKS

Demonstrate the concept of density Read More
• #### A1-11 LENGTHS - METER AND YARD

Compare the length of one meter (SI unit) to that of one yard (English unit) Read More
• #### A1-12: METRIC TAPE

Make measurements in the metric system Read More
• #### A1-21: METRONOME

Means to show different intervals of time Read More
• #### A1-22: HOURGLASS

Means to show different intervals of time Read More
• #### A1-31: VOLUME MEASURE DEMONSTRATION

Illustrate metric volume units Read More