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Two Washers
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In this activity, learners create a mind and math puzzle that requires a three-dimensional solution.

Laser Lissajous: PVC Version
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In this activity, learners use a laser pointer and two small rotating mirrors to create a variety of fascinating patterns, which can be easily and dramatically projected on a wall or screen.

Subtractive Paint Prints
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In this activity, learners of all ages will experiment with paint and printmaking.

Pi Toss
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In this activity, learners explore a surprising method for calculating the mathematical constant pi, known as Buffon's Needle.

Social Fireflies: Pico "Firefly" Communication
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Make two firefly lanterns, then program them to blink to one another and change colors.

Laser Lissajous: Binder Clip Version
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In this activity, learners use a laser pointer and two small rotating mirrors to create a variety of fascinating patterns, which can be easily and dramatically projected on a wall or screen.

Non-Round Rollers
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Wheels aren't the only things that can "roll" objects that are placed on top of it. Make non-intuitive shapes from cutouts and a compass to demonstrate this.

Radioactive-Decay Model: Substitute coins for radiation
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Get a roll of pennies, throw them on the ground, then remove those that only show tails, and repeat with the ones left over.

Plants Around a Building
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In this outdoor activity, learners discover how the environment around a building affects the growth of plants.

Plant Patterns
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In this outdoor mapping activity, learners explore where plants grow and map plant-distribution patterns.

Cutting Pi
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In this activity, learners use a string and pair of scissors to find pi in the world all around them. Take the circumference of a round object with string and cut the string to that length.

Human Traits
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In this activity, learners investigate variations in human traits. This allows learners' natural curiosity about their identity to draw them into the study of heredity.