Forget your ID number? Your pupils learn to use logarithms to determine the number of digits or characters necessary to create individual ID numbers for all members of a group. 

Concepts

logarithms, logarithmic scale, logarithmic functions

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Additional Tags

math

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Instructional Ideas

• Invite a computer teacher or science teacher for the lesson; ASCII, Richter Scale, decibel scale, etc., are mentioned in the lesson

Classroom Considerations

• Parts of the lesson assume you have covered previous lessons in module, such as referring to the logarithmic function as the WhatPower function
• Internet access is necessary if having learners do research on ASCII (as indicated in the lesson)
• The ninth installment of a 35-part module.

Pros

• Lesson notes for the exploratory challenge include questions to help group members reach conclusions
• Problems incorporate a variety of real-world contexts and situations

Cons

• None

Common Core

HSN-Q.A.2 MP1 MP2 MP3 MP4 MP7