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Spinning Cylinder: Make a triangle appear on a spinning wheel
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Spin a short piece of PVC pipe that's been marked up, and watch a triangle appear. Enjoy this optical illusion from the Exploratorium's Science Snack series.

Growing Food From Scraps
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In this activity, learners will explore vegetative propagation while preparing food scraps to grow into plants.

Conservation Island
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In this lesson, learners will understand the concepts behind endangered and extinct animals and develop their own conservation plan to save three endangered species.

Penny Battery
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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.

Popsicle Bridge
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In this activity, learners explore how engineering has impacted the development of bridges over time, including innovative designs and the challenge of creating bridges that become landmarks for a cit

Secret Messages
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In this activity, learners use Teflon (PTFE) tape to write secret messages.

Slide Whistle
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In this activity, learners build a slide whistle using PVC pipe, bamboo skewer, and piece of foam. Construction of the instrument is relatively simple.

Exploring Fabrication: Self-Assembly
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In this activity, learners participate in several full-body interactive games to model the process of self-assembly in nature and nanotechnology.

Space Elevator
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In this activity, learners imagine what the world might look like if we could build an elevator to space!

Make a Lake
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Where rainwater goes after the rain stops? And why there are rivers and lakes in some parts of the land but not in others?

Exploring Size: Ball Sorter
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In this activity, learners use sieves with different-sized holes to sort balls by size.

Great Steamboat Race
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In this outdoor activity, learners race small boats, made of cork, balsa wood, popsicle sticks etc., to investigate the rate and direction of currents in a stream or creek.

Build Your Own Marble Machine
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In this activity, learners will build a ball run contraption.

Measure the Sun's Size
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In this activity, learners make their own pinhole viewer in order to measure the size of the sun.

Ice on Mars
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In this activity, learners use sand and ice cubes to create a model of permafrost and the effects of the ice melting through the surface.

Exploring Magnetic Field Lines
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In this activity, learners explore the magnetic field of a bar magnet as an introduction to understanding Earth's magnetic field. First, learners explore and play with magnets and compasses.

Lub Dub: Make a Heart Valve
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Learners will construct a model of a heart valve using a film canister, a piece of masking tape, and a piece of paper.

Elevator Engineering
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In this activity, learners will use household items to design and build an elevator that will carry 2 passengers to a height of 16 inches...or higher!

Papermaking at Home
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Learners will follow a specific process to make their own paper using scrap paper, newspaper, or junk mail.

Clean Me Up, Snotty
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Learners will explore the chemistry of mucous and its importance to our health by following a process to make their own replica "snot." The activity includes a time and age recommendation, a materials