This activity challenges students to estimate the total number of fish in a pond, given the numbers of fish initially tagged and released, the tagged fish recaptured, and the total number of recaptured fish. The activity, part of the Figure This! collection of 80 math challenges emphasizing math in the real world, introduces the capture-recapture method as a statistical tool used by fish and wildlife experts to estimate the size of populations. The solution hint suggests that students determine what fraction of the recaptured fish was already marked. Related questions ask students to set up proportions to estimate additional populations and to think about confounding variables that could affect the results. Answers to all questions and links to additional resources are included. Copyright 2005 Eisenhower National Clearinghouse


  • Mathematics > General

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Operations,Informal Education,Number and operations,Middle School,NSDL,oai:nsdl.org:2200/20120114184953430T,Grade 8,NSDL_SetSpec_1007936,Statistics,Ratio and proportion,Grade 6,Mathematics,Arithmetic,Grade 7



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