# Maths in Music

This task aimed to apply some of the things we’ve learned about Percentages, Data and Algebra within the context of music.  Here’s as it was given to the class.

I only wanted to do this for 2 lessons hence I chose the song and gathered the resources, even though I knew the girls could do that. The girls all love Taylor Swift and are learning to play the guitar in Music. I also knew that they’ve used all the ICT tools mentioned except for Wordle which some had Java problems with, WordItOut was a great alternative.  In fact, the girls found the most challenging part of this task is the mathematical component, i.e. finding patterns and expressing patterns using Algebra.

Note: This was not an assessment task, a mere immersion and contextualisation of maths, with some ICT integration. Not everyone submitted their work but pictures from those who did can be viewed on the class website.

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Show me the maths in music!
Maths is everywhere even in music. There are patterns, rules, percentages and fractions. In this activity, we will attempt to capture some maths in music.
Work with your buddy to create a poster. We will vote on the best ones to be displayed for Open Day and uploaded to the class website. Winners will also get merits.
Posters will be judged on (1) visual appeal (2) relevant maths used and (3) completeness.

Here’s my work in progress using a different song, Love Story just to give you an idea.

Your song is also by Taylor Swift, The Best Day

1. Get the lyrics of the song

2. Create a word cloud via Wordle; save as a jpg in Paint or PhotoShop. What are the most common words?

3. Have a copy of the lyrics in Word to count the number of words. Did Wordle get the percentages right?

 Option 1 4. Use algebra to express the patterns and rules you see 5. Create a snapshot of your algebra rules; save as a jpg in Paint so your maths symbols look right on your poster Option 2 4. Write 2 algebraic rules, e.g. 3x + 1, and show as a pattern in pictures 5. Save your rules and patterns as a jpg so your maths symbols look right on your poster

6. Put it all together into a poster using Publisher or PowerPoint with: (1) Word Cloud, (2) Lyrics, (3) Algebra rules, (4) a poster title, (5) 1-5 photos/images

7. Save and Upload to the Posters document library; use your first names as a filename

You need to look at the Music Sheets (PDF) for this task.
1. Tally the guitar chords used in the song. How many chords are there? Are there chord patterns?
2. Create a Frequency Distribution Table and a Pie Chart in Excel. What is the mode?

 Option 1 Save a copy of the song (mp3) to your desktop. 4. Import the song into Audacity and play with the Tempo. Create 3 mp3 versions of a 15-second grab: (1) original (2) faster (3) slower; you can choose the percentages but keep track of the numbers. What happens when you change the tempo? 5. Create a snapshot of your changed music and add to your poster. In textboxes, describe the changed music. Delete the song from your desktop. Option 2 (especially Music students) 4. Looking at the music sheets, find 3 – 4 mathematical patterns, e.g. Rhythm, Tempo and note values 5. Crop images and describe using both your knowledge of maths and music. Add to your poster. For example: This bar has many notes, each one is played at 16th of a beat. Play 4 sixteenth notes or semiquavers for the time it takes to play a quarter note or crotchet. All the notes add up to 4 beats because….

I’m not a big fan of spreadsheets – prefer databases more – but it needs to be taught. It can be a useful tool in life. Engaging and motivating low-ability year 10 maths students can be challenging the best of times. Here is a lesson I prepared that would teach them a life skill of budgeting using spreadsheets.

### Lesson Activity

Year 10 formals is months away but this is something most year 10 girls are excited about. So when I said we’ll create a budget for it, everyone was excited to talk about something interesting.  Motivation covered!

1. Brainstorm budget items (“What do I need for the formals?”) – emphasise no right or wrong answer, if not personally relevant then just set the budget to \$0. The point of this step is to engage.
2. Create a new spreadsheet and enter all the items under the heading of “What I need”. Good opportunity to revise basics of file creation/saving, renaming worksheet (Budget), data entry and Format-ting text and columns
3. Add new columns with headings of Min, Max, Range (excellent chance to revise these statistical concepts). Each student enters their own budget, again no right or wrong. Format columns to currency.
4. Calculate Range (=Max -Min columns); revise/teach use of Excel functions and autoFill.
5. Calculate minimum and maximum budget totals; use autoSum or use SUM function
6. With 9 months to go, create a monthly savings budget (=total / 9); some students don’t know the division symbol in Excel
7. What are your cheapest (use MIN function) and most expensive (use MAX function) items
8. Email your spreadsheet (make sure they all know how to attach files to email)

### Discussion points

• Can you afford your monthly budget (minimum, maximum)?
• What adjustments can you make to afford the items? Are you working?
• Would you consider borrowing or even doing without?