Investigating the large numbers of science is the task in a simple but deep activity. Given a one-sentence problem set-up and some basic assumptions, the class sets off on an open-ended investigation that really gives some context to all the big numbers that get thrown around a math or science class. Emphasis on practice with conversion formulas and ideas of mass vs. volume vs. density links to any level of high school science.

Concepts

volume of spheres, density, real-world applications, scientific notation

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Additional Tags

math

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Instructional Ideas

• Calculate cell count for a variety of animals
• Link to a science unit on Avogadro's number, and convert the number of cells to number of moles of cells
• Perform calculation for other cell shapes, noticing how this changes the approximation answer at the end

Classroom Considerations

• Might need to exercise sensitivity with regard to weight and potential triggering of learners with eating disorders or obesity issues. Giving an alternate of another animal's mass for calculations is a possible solution
• Class will most likely need significant guidance to get from the simple problem set up to the more complicated result

Pros

• Open-ended activity forces development of mathematical attack strategy
• Practice working with large numbers and reasonableness checks

Cons

• Problem set-up not on a separate page or in worksheet format

Common Core

HSG-MG.A.1 HSG-MG.A.2 MP4