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This activity helps students learn how computers "compress" text by identifying repeating patterns of letters, words, and phrases.

1 cent - $1 per student Ages 8 - adult 30 to 45 minutes
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In this outdoor, sunny day activity, learners experiment with paper leaf models to discover how some desert plants conserve water.

$10 - $20 per group Ages 8 - 18 45 to 60 minutes