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In this activity, learners discover that as the salinity of water increases, the density increases as well. Learners prove this by attempting to float fresh eggs in saltwater and freshwater.

1 cent - $1 per group Ages 6 - 14 5 to 10 minutes
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In this activity, learners investigate and compare the rate of drying in different conditions.

$1 - $5 per group Ages 6 - 11 30 to 45 minutes
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In this experiment, learners separate different types of molecules in marker inks (using a technique called "thin layer chromatography").

$1 - $5 per student Ages 4 - 8 30 to 45 minutes
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In this activity, explore chromatography and the various colors that make up the ink in markers. Use this activity to investigate cohesion and adhesion.

1 cent - $1 per student Ages 6 - 11 5 to 10 minutes
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In this activity, learners will rate the day, a book, or something else on a scale from -2 to 2. This activity works well for groups of all ages.

free Ages 4 - 14 5 to 10 minutes
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In this math activity, learners create their own units of measurement by making noodle rulers. Learners practice estimating and measuring objects using the noodle rulers .

$1 - $5 per student Ages 4 - 8 10 to 30 minutes
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In this activity, learners build a machine made of craft sticks to multiply the levering motion of their hands and create a device that bends and extends.

$1 - $5 per student Ages 6 - 14 1 to 2 hours
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In this simple activity, learners see the production of a gas, which visibly fills up a balloon placed over the neck of a bottle.

1 cent - $1 per student Ages 6 - 14 5 to 10 minutes
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In this activity, learners sniff out scents hidden in balloons! After investigating, learners discover we sometimes can use another sense (smell) to detect things too small to see.

$5 - $10 per group Ages 4 - adult 5 to 10 minutes
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In this design challenge, learners will practice empathy and design thinking skills by creating an invention of the future.

free Ages 6 - adult 10 to 30 minutes
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In this activity, learners construct a simple game to test their hand-eye coordination and steadiness of hand.

1 cent - $1 per student Ages 6 - 14 30 to 45 minutes
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In this activity, learners will conduct an open-ended survey, and then organize and analyze results. What languages does everyone speak? What’s the most common? the least common?

1 cent - $1 per group Ages 6 - 14 5 to 10 minutes
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In this activity, learners explore the economics of coal mining as you they use fake money to purchase mining tools, attempt to carefully mine their cookies, sell their chocolate chip ore, and try to

$5 - $10 per student Ages 6 - adult 10 to 30 minutes
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In this quick activity, learners observe how the added sugar in a can of soda affects its density and thus, its ability to float in water.

$1 - $5 per group Ages 6 - 14 Under 5 minutes
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In this family or group inquiry activity, learners use their senses to explore a local forest or woodland.

1 cent - $1 per group Ages 6 - 11 1 to 2 hours
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In this activity, learners investigate circulation and measure their own your heartbeat. A heart rate, or pulse, is the number of times the heart beats per minute.

1 cent - $1 per student Ages 4 - 11 Under 5 minutes
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In this activity (on page 2), pairs of learners create an imaginary crime scene. One person leaves the room while the other person moves a few things around.

free Ages 6 - adult 5 to 10 minutes
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This is an activity which will allow learners to gain an understanding of lemur behavior through observation and role play.

free Ages 6 - 14 10 to 30 minutes
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In this activity, learners listen to a story and tell a story of their own as they learn about the importance of elders in Native American cultures.

$1 - $5 per group Ages 4 - 11 30 to 45 minutes
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In this activity, learners explore how ordinary marshmallows expand when heated in a microwave.

$1 - $5 per group Ages 6 - 14 Under 5 minutes