What's that sound? Transpose music proportionally using a ukulele. A ukulele artist explains how math is beneficial in transposing songs written in one key to another. The video demonstrates that transposing keeps the ratio between the notes the same, so listeners hear the same tune. With the Math at the Core: Ratios resource, class members transpose a piece of music using a scale factor.

Concepts

music patterns, music notes, scale, frequency

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Additional Tags

math

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Instructional Ideas

• If possible, play the two different versions of the song on the keyboard

Classroom Considerations

• Individuals should know how to determine whether ratios are proportional
• Assumes pupils are comfortable dividing decimals

Pros

• Provides grouping information for each portion of the activity
• Includes a table with frequencies and musical notes

Cons

• None

Common Core

6.RP.A.1 6.RP.A.2 7.RP.A.2.a 7.RP.A.2.c 7.RP.A.3