This activity provides instructions for a more complicated version of the classic game Tic-Tac-Toe.

6-8
9-12

This activity uses four randomly selected numbers to create an equation that equals a fifth number.

6-8

This activity provides instructions for a cool card trick that's guaranteed to make you look like a mind reader.

6-8

Provides instructions for winning Tic-Tac-Toe strategies.

6-8

This activity (aka "snack") provides instructions for studying reflection, refraction, and the critical angle of light using a laser and an aquarium.

9-12

This activity provides instructions for making amazing architecture with candy and toothpicks.

K-2
3-5

This activity provides instructions for building inclinometers, which are devices that let you measure the height of a distant object.

6-8

This activity (aka "snack") provides instructions for building a hands-on model of half-life using coins.

6-8
9-12

This activity (aka "snack") provides instructions for "defying gravity" by stacking wooden blocks (or textbooks) so that the top block extends completely past the end of the bottom block.

3-5
6-8
9-12

This activity (aka "snack") gives directions for writing a digital message using an old audiocassette tape and a magnet. The binary codes for the letters of the alphabet are provided.

6-8
9-12