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This activity (on pages 35-43) lets learners analyze a "herd of elk" to detect the spread of a bacterial disease called brucellosis.

1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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In this math lesson, learners apply the concepts of ratio and proportion to the capture-recapture statistical procedure.

$5 - $10 per group Ages 11 - 14 45 to 60 minutes