Nancy J. Schmitt
As an introduction to this unit, the PBS special "Frogs the Green Line" which is about 30 minutes is viewed. This show is available on the Internet and is broken into pieces that may be viewed separately. Based on information from this introduction, the students will answer questions. CAPT (the standardized test that is currently given to sophomores in high school in Connecticut) type questions based on knowledge of percentage and proportions are included. This lesson is designed to introduce the topic of water and entice the students to think about it some more, instead of taking water for granted.
Questions that would be appropriate are:
1.
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Are frogs in trouble?
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2.
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What is happening to the frogs? Name three things impacting the frogs.
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3.
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Do you think what is happening to the frogs gives clues about what may be in your drinking water?
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4.
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How many male frogs on average have female traits?
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5.
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Based on your answer to number 4, how many male frogs would have female traits if there are 100 male frogs in the pond, 200 male frogs, 500 male frogs?
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6.
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What if the percentage of male frogs having male traits, was 10%, how many male frogs would have female traits if there are 100 male frogs in the pond, 200 male frogs, 500 male frogs?
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