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In this multi-faceted game (on pages 25-35), learners recreate what happens to creatures in the Brazilian rain forest as they grow from egg to adult—especially those that use fallen, empty Brazil nut

1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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In this outdoor game, learners simulate a herd of deer trying to survive in an area called the "home range." Learners explore the concept of "carrying capacity"—what size population of an organism can

$5 - $10 per group Ages 8 - 14 45 to 60 minutes
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In this activity (p.14-15 of PDF), learners discover the concepts of competition and limiting factors as they relate to plant and animal communities.

$1 - $5 per student Ages 4 - 11 10 to 30 minutes
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In this plant science activity, learners role play as vegetables and weeds competing for nutrients.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes