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A Mole of Gas
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In this two-part activity, learners use everyday materials to visualize one mole of gas or 22.4 liters of gas. The first activity involves sublimating dry ice in large garbage bag.

Waterproof that Roof!
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In this activity, learners explore how engineers have improved roofing designs and materials in order to protect the contents of buildings.

Find My Card
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In this activity, learners find the answer to the question, "if you have a pile of 8 cards, and you remove half, then half again, how many times can you do this until you get to just one card?" This w

Introduction to the New Chain Gang
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In this activity, learners use pop-beads to understand the characteristics and properties of polymer chains.

Arctic Sea Ice
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In this activity, learners explore how the area of Arctic sea ice has changed over recent years. First, learners graph the area of Arctic sea ice over time from 1979 to 2007.

Flashy Fish
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Professor John Endler traveled to Trinidad in the 1970s to study wild guppies. In this activity, learners take part in an online simulation of Endler's work.
Let's Count Humpback Whales: Environmental Effects on Population
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In this activity, learners use whale count data from the Hawaiian Islands Humpback Whale National Marine Sanctuary to compare whale counts in relation to environmental factors.

Crash Landing!
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In this activity, groups cut out and sort cards showing items recovered from a crash landing on the Moon. The 12 items range from food and water to rope and matches to a self-inflating life raft.

Get the Porridge Just Right
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Learners set up three different bowls, each with a different mass of oatmeal. Learners monitor the temperature of the oatmeal and find that larger masses take longer to cool.

Build a Bubble Circuit
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In this engineering design challenge, learners make a bubble maze that allows bubbles to move through a series of “on” and “off” switches.

Glow in the Dark Jello
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In this activity, learners will make homemade jello that glows under a blacklight. They will learn about quinine, an ingredient in tonic water that is fluorescent.

Illuminations on Rates of Reactions
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In this activity, learners investigate the speed of chemical reactions with light sticks. Learners discover that reactions can be sped up or slowed down due to temperature changes.

Nebula in a Jar
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In this activity, learners will build a model of a nebula using cotton balls and colored water. Astronomers photograph nebulas and add colors to provide information about the nebula's composition.

Secret Codon
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In this activity, "write" a secret message in genetic code as beads on a string.

A Cubic Foot Per Second
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In this activity, learners measure and calculate the amount of cubic feet various containers contain. Next, learners investigate cubic feet per second (cps), by carrying jugs in one second.

Planaria Fishing
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In this activity, learners capture and observe planaria, which are worms that eat tiny pond critters.

Momentum Machine: Speed up your spin
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Spin in an office chair holding milk jugs! Plus, learn physics. Very fun (but stay safe) activity from the Exploratorium Science Snacks series.

Born of Blood: Craft Stick Chromosomes
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In this activity, learners work in groups to match craft sticks that represent chromosomes. Learners must define critical attributes of their chromosomes as they look for matching chromosomes.

Center of Gravity
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A simple, yet fun activity that lets learners find the center of balance of a ruler (or any long thin object). Developed by the Exploratorium and no assembly needed.

The Crayon Rock Cycle
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In this activity, learners use crayons to draw conclusions about rocks and the rock cycle.