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In this activity, learners light an LED with five cents. Learners use two different metals and some sour, salty water to create a cheap battery.

1 cent - $1 per student Ages 8 - 18 10 to 30 minutes
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This activity explores the concept of center of gravity by having learners build a Jitterbug--a motorized toy that seems to dance--using a recycled CD and a DC motor.

1 cent - $1 per student Ages 8 - 14 10 to 30 minutes
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In this math activity, learners find patterns in telephone numbers.

1 cent - $1 per group Ages 4 - 8 5 to 10 minutes