Powers of two: it's a matter of doubling. A short summative assessment task asks pupils to determine a process to calculate the number of cells at given time intervals. They use powers of two in order to calculate the number of cells and to determine when the number of cells will be at least 100,000. Class members must provide a numerical answer as well show the process they used to determine the answer.

Concepts

exponential functions, exponential growth, exponential models, cell reproduction

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Additional Tags

math

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Instructional Ideas

• Use the assessment before working with exponential functions
• Have pupils work the problem individually, then get in groups to explain how they approached the problem

Classroom Considerations

• The resource assumes the class has some exposure to exponential notation

Pros

• The resource contains examples of scored work
• The rubric provides the correct answers as well as point allocations for each correct answer

Cons

• None

Common Core

HSF-BF.A.1.a MP3 MP7