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Make a new page in your notebook:
Proportions – Capture Recapture.
Update your TOC.
What do you think?
Answer this question in your notebook.
Estimating
Ping Pong Balls!
http://www.youtube.com/watch?v=tyX79mPm2xY
Capture ReCapture!

Estimate the number of total fish in your habitat.
Estimated number of fish _____________.
Record this...
Pick the number of fish that you would like to tag.
Record this number in column 1.
Replace goldfish with tagged fish. Mix around.
Select a sample of goldfish.
Count the total fish in the sample, enter that...
Count the number of "tagged" fish,
enter that number into column 3.
Write the proportion in column 4.
Solve the proportion to estimate the number of fish in your pond.
For the most accurate results, repeat the procedure several
times and take an AVERAGE.
Results
Group

Original Estimate

Calculated
Estimate (average)

Actual Number of
Goldfish
What other things are you interested in estimating by sampling?
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Goldfish Proportions Capture Recapture Activity

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6th grade proportional reasoning capture recapture activity using Goldfish crackers.

Published in: Education, Lifestyle, Technology
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Goldfish Proportions Capture Recapture Activity

  1. 1. Make a new page in your notebook: Proportions – Capture Recapture. Update your TOC.
  2. 2. What do you think? Answer this question in your notebook.
  3. 3. Estimating Ping Pong Balls! http://www.youtube.com/watch?v=tyX79mPm2xY
  4. 4. Capture ReCapture! Estimate the number of total fish in your habitat. Estimated number of fish _____________. Record this!
  5. 5. Pick the number of fish that you would like to tag. Record this number in column 1.
  6. 6. Replace goldfish with tagged fish. Mix around. Select a sample of goldfish. Count the total fish in the sample, enter that number into column 2.
  7. 7. Count the number of "tagged" fish, enter that number into column 3.
  8. 8. Write the proportion in column 4. Solve the proportion to estimate the number of fish in your pond.
  9. 9. For the most accurate results, repeat the procedure several times and take an AVERAGE.
  10. 10. Results Group Original Estimate Calculated Estimate (average) Actual Number of Goldfish
  11. 11. What other things are you interested in estimating by sampling?

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