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In this fun, hands-on autumn activity, learners experiment to discover whether the colored substances in leaves can be separated from the leaves.

$10 - $20 per group Ages 8 - 14 1 to 2 hours
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This exercise is designed to teach young learners the different parts of a plant (root, stems, leaves, flowers, fruit, and seeds), the basic functions of each part, and to show that tiny microscopic o

$5 - $10 per group Ages 4 - 11 30 to 45 minutes
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In this activity, learners investigate how plants use water. By making the flowers change color, learners see how water moves up the stem to the leaves and the flowers.

$5 - $10 per group Ages 6 - 11 4 to 24 hours
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In this outdoor activity, learners make models of homes that might protect small animals from the elements, then search living plants for real structures made by small animals.

$10 - $20 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners conduct a series of hands-on experiments that demonstrate how the working of plants' veins, known as capillary action, enables water to travel throughout the length of a pla

$5 - $10 per student Ages 11 - 14 1 to 7 days
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In this online interactive, learners use fossils to infer temperatures 55 million years ago, at the sites where the fossils were found.

free Ages 11 - 18 10 to 30 minutes
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In this activity, learners conduct an experiment to explore how water flows up from a tree's roots to its leafy crown.

$1 - $5 per student Ages 6 - 14 1 to 2 hours
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In this hands-on activity, learners investigate the functional design of leaves on a tree.

$1 - $5 per group Ages 8 - 14 1 to 2 hours
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In this activity, young learners (2 years and up) explore tree structure and biology. Tree products are explored by painitng with fruit.

$1 - $5 per student Ages 4 - 8 5 to 10 minutes
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In this activity on page 5 of the PDF (Plants—The Green Machines), learners use chromatography to separate and identify pigments within various leaves.

$1 - $5 per student Ages 8 - 14 1 to 2 hours
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In this laboratory exercise, learners will discover how many different plant hosts they can find that are infected by the same genus of a powdery mildew fungus, or how many different genera of powdery

$1 - $5 per group Ages 11 - 18 45 to 60 minutes
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In this activity, learners calculate the number of milliliters of water a nearby tree transpires per day.

$1 - $5 per group Ages 14 - 18 4 to 24 hours
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In this activity, learners build penetrometers to test leaf toughness. Biologists measure leaf toughness to study the feeding preferences of insects and bugs.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this four-part laboratory exercise, learners investigate properties of Tobacco mosaic virus (TMV) including (1) symptoms induced by the virus in susceptible plants at the macroscopic and microscopi

Over $20 per group Ages 14 - 18 1 to 7 days
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In this outdoor activity, learners compare the moisture released from different kinds of leaves and from different parts of the same leaf, by observing the color change of cobalt chloride paper.

$10 - $20 per group Ages 8 - 18 45 to 60 minutes
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This activity (on pages 24-29) combines science and art to introduce learners to how different animal pollinators spread pollen from one plant to another, and how certain shapes, colors, and smells of

$1 - $5 per group Ages 8 - 14 1 to 2 hours
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In this outdoor activity, learners use a "litter-critter" wheel to help them identify different animals they find living in a natural litter habitat.

$10 - $20 per group Ages 8 - 14 45 to 60 minutes
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In this outdoor activity, learners work in pairs using their senses—especially touch—to learn more about individual trees.

$5 - $10 per group Ages 8 - 18 1 to 2 hours
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In this family or group activity, learners conduct a chromatography experiment to reveal the colors that leaves "hide" under their green pigments.

$1 - $5 per student Ages 6 - 14 45 to 60 minutes
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In this outdoor fall activity, learners find out what living in or under a layer of leaves is like.

1 cent - $1 per group Ages 8 - 14 45 to 60 minutes