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Cool Trees
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This warm weather activity introduces learners to the impact trees have on blocking the sun's heat and reducing temperature on the Earth's surface.
The Bent Pencil
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In this optics activity, learners explore how light bends and affects what we see.

Stride Ruler
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In this activity, learners use their feet to estimate distances. Learners calculate the distance of one step in centimeters by measuring 10 steps at a time to reduce measurement error.

Food Chains and Webs
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In this activity, learners investigate feeding relationships. Learners complete a food web and then make a mobile to represent a food chain.

Light Quest
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Learners test their "light-smarts" by playing a game called "Light Quest!" The game board represents an atom and each player represents an electron that has been bumped into the atom's outer unstable

Memory Solitaire
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In this online game, learners practice memory recall. They are shown a collage of pictures for two minutes, then have to write down everything they remember and check how they did.

Straw Oboe: Two lips make sound
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Oboes's unique sound originates from the two small reeds a musician blows into. Make your own double reed instrument out of straw!

DNA Detective
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This activity is about collecting and analyzing DNA as part of a criminal investigation.

Exploring Earth: Investigating Clouds
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“Exploring Earth: Investigating Clouds” is a hands-on activity in which visitors create a cloud in a bottle and explore it with laser light.

Your Sense of Taste: Discover the real taste of candy
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Your tongue can sense about 6 different flavors (salty, sweet, bitter, sour, umami/savory, and fat), but your nose provides a lot more "taste" information than you realize when you eat.

Great Openings: Slots, 35 Sense, and Hole In One
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These three short activities challenge groups to fit objects through paper and index cards: "Slots" presents the challenge for one learner to figure out which objects fit through a hole cut by another

Soap Film on a Can
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The beautiful iridescent colors of a bubble in a can! With this Exploratorium Science Snack, create beautiful soap films on the open end of a can to see beautiful rainbows of color.

See It to Believe It: Visual Discrimination
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In this activity (12th on the page), learners investigate their ability to discriminate (see) different colors.

Measuring Your Blind Spot
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In this activity, learners calculate the width (horizontal diameter) of the blind spot on their retina. Learners make a blind spot tester using a piece of notebook paper.

Magical Möbius
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In this tabletop activity (on pages 32-40), learners make Möbius strips -- 3D surfaces with only one side.

Expose Your Nose
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In this simple exploratory activity (1st activity on the page), blindfolded learners try to identify mystery items by smell.

How Loud is Too Loud
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In this activity (described on pages 39-42 of PDF), learners make a paper wheel (on pages 57-60 of PDF) that shows them the relative loudness of different sounds.

Depth Spinner
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Experience a spinning spiral...you won't be hypnotized, but you'll see what happens when you look away. It's like getting off a merry-go-round and everything keeps moving.

Percentage of Oxygen in the Air
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In this activity, learners calculate the percentage of oxygen in the atmosphere by using steel wool's ability to rust.

Tessellations
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In this activity, learners will engineer a new shape and use it to create a new pattern with no wasted space.