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This is written as a static display, but can easily be adapted to a hands-on experiment for learners to conduct.

$5 - $10 per group Ages 11 - adult 10 to 30 minutes
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Plants need nutrients to grow. This is why we apply fertilizers to grass and food crops. In this activity, learners will explore how fertilizers can affect lakes and other bodies of water.

$5 - $10 per group Ages 8 - adult 1 to 4 weeks
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In this activity, learners smell bottles containing bee pheromone molecules (or herb/spice extracts as a substitute). Bees release these molecules to send messages to each other.

$5 - $10 per group Ages 11 - 18 30 to 45 minutes
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In this environmental science lesson, learners will examine the dangers of mercury and how humans contribute to growing mercury emissions on Earth.

$5 - $10 per group Ages 14 - 18 1 to 2 hours
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In this activity, learners collect, analyze, and interpret information about objects in order to classify them into a cladogram. Use this activity to talk about how scientists classify things.

$5 - $10 per group Ages 8 - 18 1 to 2 hours
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This activity was designed for blind learners, but all types of learners can use it to build and examine a basic electrical circuit.

$5 - $10 per student Ages 11 - 18 10 to 30 minutes
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In this activity, a spinning bicycle wheel resists efforts to tilt it and point the axle in a new direction.

$5 - $10 per group Ages 11 - 18 10 to 30 minutes
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In this activity, learners discuss the different salinities of oceans, rivers and estuaries.

$5 - $10 per group Ages 8 - adult 1 to 7 days
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In this activity, learners explore the engineering design process (EDP)—the process engineers use to solve design challenges.

$5 - $10 per group Ages 8 - 18 1 to 2 hours
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In this activity/demo, learners discover how liquid nitrogen cools a creamy mixture at such a rapid rate that it precipitates super fine grained (nano) ice cream.

$5 - $10 per group Ages 4 - adult 10 to 30 minutes
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As a long-term project, you can rear monarch butterflies at home or in a classroom.

$5 - $10 per group Ages 6 - adult 1 to 12 months
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Many of the genetic sequences found in the fruit fly genome are similar to those found in humans.

$5 - $10 per group Ages 14 - adult 45 to 60 minutes
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Learners observe an electrochemical cell constructed from a small jar containing zinc and copper strips immersed in separate solutions. The strips are connected to a motor that turns a small fan.

$5 - $10 per group Ages 11 - adult 10 to 30 minutes
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In this outdoor activity and observation game, learners hunt for a variety of textures, colors, odors and evidence of organisms in the activity site.

$5 - $10 per group Ages 4 - adult 30 to 45 minutes
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In this activity, learners set up a night time insect observation station with a light and sheet.

$5 - $10 per group Ages 4 - adult 30 to 45 minutes
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In this fun and in depth hands-on experiment, learners test various liquid samples (distilled water, lemon juice, vinegar, and baking soda mixed with water) to determine their pH levels and identify e

$5 - $10 per group Ages 11 - 18 1 to 4 weeks
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In order to examine the random nature of mutations and natural selection, learners "breed" clutches of Egyptian Origami Birds (Avis papyrus) using random number generators (dice and coins) to mutate s

$5 - $10 per group Ages 14 - 18 2 to 4 hours
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In this physics activity, learners construct a small-scale version of a classic carnival game.

$5 - $10 per group Ages 11 - 18 10 to 30 minutes
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In this activity, learners make their own heat waves in an aquarium.

$5 - $10 per group Ages 8 - 18 10 to 30 minutes
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In this kinesthetic activity, learners move pom-pom "ions" across a membrane to simulate how an action potential is propagated along an axon.

$5 - $10 per group Ages 11 - 18 45 to 60 minutes