Chords

Author:tobibrooks, user1597

Activity: The three sine waves represent three different notes. Find the period of the three sine waves below. What is the 'least common multiple' of those three numbers? How does that show on the graphs. Do you think these three notes would sound good together?

Reflection A guitar chord is formed by playing the 1st, 3rd, and 5th note in a scale. Let's say that the red equation represents the 1st note, the blue represents the 3nd note, and the green represents the 5th note. Make a conjecture about how this parallels what happens on a guitar.

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