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### Pan Balance – Numbers

3-5, 6-8

Use this tool to strengthen understanding and computation of numerical expressions and equality using a balance scale.### Pan Balance – Shapes

3-5, 6-8

Use this tool to build up to algebraic thinking by exploring how to balance shapes of unknown weight.### Tessellation Creator

3-5, 6-8

Use this applet to create patterns to cover the screen using regular polygons.### Adjustable Spinner

Pre-K-2, 3-5, 6-8, 9-12

Use this tool to create a spinner to examine experimental and theoretical outcomes.### Bobbie Bear

Pre-K-2, 3-5

Use counting strategies to make outfits for Bobbie Bear with different colored shirts and pants.

Click here to play Bobbie Bear in Spanish.

### Cube Nets

3-5, 6-8

This applet allows you to examine various two-dimensional figures to determine which ones can be folded into a cube.### Five Frame

Pre-K-2

The four games that can be played with
this applet help to develop counting and addition skills.### Ten Frame

Pre-K-2

The four games that can be played with this applet help to develop counting and addition skills.### Area Tool

6-8

Use this tool to determine how the length of the base and the height of a
triangle, parallelogram, or trapezoid can be used to determine its area.