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In this activity (on page 1 of the PDF), learners make a "mini-globe" to investigate the causes of day and night on our planet.

$1 - $5 per group Ages 8 - 14 30 to 45 minutes
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In this activity about sleep rhythms (on page 21 of the PDF), learners will collect data about their own sleep cycles and use a fraction wheel to examine their data.

1 cent - $1 per student Ages 8 - 14 1 to 7 days
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In this activity about sleep rhythms (on page 25 of the PDF), learners will investigate how changing the time they go to bed impacts their own sleep patterns.

free Ages 8 - 14 1 to 7 days