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Learners create a model of a wetland to observe how it absorbs and filters water from the environment.

$1 - $5 per group Ages 8 - 18 45 to 60 minutes
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In this three-part activity, learners conduct simple experiments to see how light refracts and reflects, and how colors of light affect what we see.

$5 - $10 per student Ages 8 - 18 45 to 60 minutes
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In this activity (on pages 34-39), learners make a fairly detailed model of DNA using licorice and gumdrops.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this optics activity, demonstrate diffraction using a candle or a small bright flashlight bulb and a slide made with two pencils.

$5 - $10 per student Ages 8 - 18 10 to 30 minutes
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In this activity (p.6-10 of PDF), learners use different methods for hunting minibeasts (bugs). Learners can either make traps or simply look for minibeasts under stones and logs.

free Ages 6 - 11 45 to 60 minutes
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In this activity (posted on March 12, 2011), learners follow the steps to construct a spectroscope, a tool used to analyze light and color.

$10 - $20 per group Ages 8 - 18 45 to 60 minutes
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In this activity, learners play bingo to learn about the diversity of birds. This game includes a warm-up lesson and "Full Flight" version.

free Ages 6 - 11 10 to 30 minutes
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In this multi-faceted game (on pages 25-35), learners recreate what happens to creatures in the Brazilian rain forest as they grow from egg to adult—especially those that use fallen, empty Brazil nut

1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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In this activity, learners create their own bird species using arts and crafts materials. The bird call recordings are not online so the introduction activity can't be done, but everything else can.

1 cent - $1 per group Ages 4 - 11 30 to 45 minutes
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In this experiment, learners work in pairs to create two gloves -- one that contains a layer of shortening (blubber) inside, and one that doesn't.

$5 - $10 per student Ages 8 - 14 10 to 30 minutes
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In this math activity, learners guess which cereals contain the most sugar. Learners use the nutrition labels on the cereal boxes to find the cereal with the least amount of sugar.

$5 - $10 per group Ages 6 - 11 5 to 10 minutes
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In this outdoor activity, learners search for the warmest and coolest, windiest and calmest, wettest and driest, and brightest and darkest spots in an area.

$10 - $20 per group Ages 8 - 18 45 to 60 minutes
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In this activity, learners discuss how life is defined and conduct a simple experiment, looking for signs of life in three different “soil” samples.

$5 - $10 per group Ages 8 - 14 45 to 60 minutes
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In this outdoor activity, learners use only their senses to to find the extremes of several environmental variables or physical factors: wind, temperature, light, slope and moisture.

$1 - $5 per group Ages 6 - 14 30 to 45 minutes
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In this creative activity, learners will practice looking carefully to observe details and to become familiar with dioramas as a method for displaying naturalistic scenes.

free Ages 4 - 14 30 to 45 minutes
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In this activity, learners predict whether a ball on Earth or a ball on the Moon bounces higher when dropped and why.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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Why should we wear masks? Do masks work? Do some masks work better than others? Learners find out in this activity.

$5 - $10 per group Ages 4 - 18 10 to 30 minutes
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In this activity, learners are introduced to tree rings by examining a cross section of a tree, also known as a “tree cookie.” They discover how tree age can be determined by studying the rings and ho

1 cent - $1 per group Ages 8 - 18 45 to 60 minutes
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In this activity, learners create a straw oboe to explore sound and pitch.

1 cent - $1 per student Ages 6 - 14 5 to 10 minutes
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This activity demonstrates the importance of wearing a helmet to protect the brain. An egg is used to symbolize a head with the shell as the skull and the inside of the egg as the brain.

1 cent - $1 per group Ages 4 - 14 10 to 30 minutes