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In this activity about endoskeletons (page 8 of PDF), learners observe, compare and contrast different kinds of chicken bones, and relate their chicken bone observations to human bones.

$1 - $5 per group Ages 6 - 11 45 to 60 minutes
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This is a virtual representation of a sound mixer containing pre-looped sounds of animal, insect, and environmental noises.

free Ages 6 - 11 5 to 10 minutes
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Using a real-size sketch of a baby elephant's footprint, learners estimate, measure and record the width (diameter) and outside edge length (perimeter or circumference) of the footprint.

1 cent - $1 per group Ages 4 - 11 30 to 45 minutes
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In this demonstration, learners observe vinegar and baking soda creating carbon dioxide (CO2) in a bottle. The gas is poured out of a bottle onto a candle flame, putting out the candle.

1 cent - $1 per group Ages 8 - 14 5 to 10 minutes
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In this activity about food safety and nutrition, learners investigate safe food preparation by making fruit ice cream.

$5 - $10 per group Ages 8 - 14 30 to 45 minutes
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In this activity, learners explore reaction time and challenge themselves to improve their coordination. Do you want to move faster? Catch that ball that you never seem to see in time?

1 cent - $1 per student Ages 4 - 14 5 to 10 minutes
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Learners develop awareness and understanding of the daily air quality using the Air Quality Index (AQI) listed in the newspaper or online.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners construct possible food webs for six different ecosystems as they learn about the roles of different kinds of living organisms.

1 cent - $1 per group Ages 8 - 14 30 to 45 minutes
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In this activity, learners of all ages will design a functional bird feeder using familiar, every day materials.

$5 - $10 per group Ages 4 - adult 30 to 45 minutes
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In this activity, learners will plot the distribution of various oozes using information from sediment maps.

free Ages 14 - 18 45 to 60 minutes
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In this activity, learners discover that our hands are not reliable thermometers.

$1 - $5 per student Ages 8 - 14 10 to 30 minutes
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In this activity (on page 142 of the PDF), learners will compare breathing rates before and after hyperventilation to explore how reduced carbon dioxide levels in the blood lower the need to breathe.

1 cent - $1 per group Ages 8 - 18 45 to 60 minutes
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This resource contains several mini-explorations using a slide projector as a light source to investigate light and the properties of images.

$1 - $5 per group Ages 8 - 14 30 to 45 minutes
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In this activity (page 87 of the PDF), learners move their bodies to better understand the three axes of rotation: pitch, roll and yaw.

free Ages 8 - 18 45 to 60 minutes
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This lesson gives full instructions for making cabbage juice indicator, a procedure sheet for learners to record observations as they use the indicator to test materials, and extension activities to d

$1 - $5 per group Ages 6 - 14 30 to 45 minutes
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In this activity, learners participate in a simulated dig to discover fossilized dinosaur bones. Learners take notes, make a map and propose theories about dinosaurs.

Over $20 per group Ages 8 - 11 1 to 2 hours
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In this activity, learners discover how artists start with a skeleton and turn it into a realistic drawing of a dinosaur.

free Ages 4 - 14 10 to 30 minutes
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In this activity, learners examine the properties of different seaweeds, investigate what happens when powdered seaweed (alginate) is added to water, and learn about food products made with seaweed.

$5 - $10 per group Ages 4 - adult 10 to 30 minutes
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Learners design their own experiment to determine conditions that either help or hinder the decomposition of carrots by soil microbes.

$10 - $20 per group Ages 11 - 14 1 to 4 weeks
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In this activity on page 11 of the PDF, learners follow simple steps to recycle old newspaper into new paper.

$1 - $5 per student Ages 6 - 14 1 to 7 days