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This activity (on page 3 of the PDF under GPS: Baseball Activity) is a full inquiry investigation into how "bounciness" relates to the distance a ball will fly when hit off a batting tee.

$5 - $10 per group Ages 8 - 14 1 to 2 hours
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In this activity, learners model erosion using a clear shoebox and sand or soil.

$5 - $10 per group Ages 8 - 11 1 to 2 hours
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In this quick activity, learners take a balance challenge to measure their average balance time. As they collect data, they investigate how practice and repetition improve their balance time.

$5 - $10 per group Ages 8 - 11 5 to 10 minutes
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In this design challenge activity, learners invent a convenient way for someone using crutches or a wheelchair to carry small personal items.

$5 - $10 per group Ages 8 - 14 30 to 45 minutes
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In this activity, learners discover how their heart rate changes in different situations.

$5 - $10 per student Ages 8 - 14 30 to 45 minutes
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In this activity, learners compare ways to measure their heart rates. Learners build their own stethoscopes and learn how exercise affects heart rate.

$5 - $10 per group Ages 8 - 14 1 to 2 hours
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In this activity, learners model the flow of energy from the sun as it enters a photovoltaic cell, moves along a wire and powers a load.

$5 - $10 per group Ages 4 - 11 10 to 30 minutes
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In this activity, learners explore properties of water and watch evaporation happen by "painting" with water in the sun.

$5 - $10 per group Ages 4 - 8 10 to 30 minutes
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Use the Zoo Calendar (page 1 of PDF) to involve learners in interdisciplinary, whole language, and writing activities about ecological concepts.

$5 - $10 per group Ages 6 - 11 1 to 4 weeks
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In this matchmaking activity (on page 2 of the PDF under GPS: Animal Scent Activity), learners will each have a scented cotton ball taped to their shoulder. The scent (e.g.

$5 - $10 per group Ages 8 - 14 45 to 60 minutes