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In this health activity (on page 3 of the PDF), learners will learn about the body‘s defenses against invasion from tiny particles.

$10 - $20 per group Ages 8 - 14 30 to 45 minutes
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This activity (on pages 15-23) combines interactive role-playing and graphing to introduce learners to the health affects of pollen.

1 cent - $1 per group Ages 8 - 14 1 to 2 hours