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In this activity, learners will estimate the sizes of balls to learn how to estimate the size of hail. Learners will compare their estimates to the estimates of their peers and the real measurements.

$1 - $5 per group Ages 6 - 14 10 to 30 minutes
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In this activity, learners will plan a snack within a budget. With a $20 limit (theoretical) to spend on snack for everyone, learners look over grocery store circulars and make their shopping lists.

free Ages 6 - 14 45 to 60 minutes
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In this activity, learners will decide together on a question about how far, long or high the group could reach together.

free Ages 4 - 14 10 to 30 minutes
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This activity puts a mathematical twist on the familiar “guessing jar.” No guesses allowed, estimates only.

1 cent - $1 per group Ages 4 - 14 5 to 10 minutes
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In this activity, learners will construct a measuring device (snake "string") to improve their observation skills.

$1 - $5 per student Ages 4 - 14 5 to 10 minutes
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Learners make a counting/estimating jar to exchange with friends or bring home.

1 cent - $1 per student Ages 4 - 14 10 to 30 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 coin math activity, learners sort and stack 100 (one hundred) pennies into piles of 5 pennies each, 10 pennies each, and 20 pennies each.

1 cent - $1 per group Ages 6 - 11 10 to 30 minutes
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In this outdoor activity, learners measure familiar objects in nature to practice working with the metric system.

$10 - $20 per group Ages 6 - 14 45 to 60 minutes
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Build time sense into the schedule by asking learners to predict what can happen in a certain amount of time: We have 20 minutes before outdoor time. What can you get done?

free Ages 6 - 14 10 to 30 minutes
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In this activity, learners will make cleaning up more fun with predictions and counting. Estimate how many things are on the floor (or table), then count as they are picked up.

free Ages 4 - 11 5 to 10 minutes