Available · Math + Music · Runs in the browser

Music of Me.

"Compose your own song — and discover that music is fractions."

Students write an original song note by note, then prove that every measure adds up. Musical notation turns out to be fraction arithmetic — and each student walks away with printable sheet music and a QR code that plays their song out loud.

4 4 1/4 1/4 1/8 1/8 1/4 + 1/4 + 1/8 + 1/8 = 3/4
Every note is a fraction
Grade Level
Grade 7
Duration
1–2 weeks
Cost
Free
Subjects
Math + Music
Standards
7.NS.A.1–3
Why this works

The unit where fractions finally sound right.

Students have added and divided fractions since elementary school. Here they do it on something they actually care about — their own song — and the abstract operations suddenly have a reason to exist.

Math concepts

Notation is fraction arithmetic.

Whole, half, quarter, eighth, sixteenth — every note and rest is a fraction of a measure. Filling a measure is all four operations on rational numbers, made concrete.

  • Add & subtract fractions (complete the measure)
  • Multiply & divide (grouping and halving notes)
  • Common denominators & simplest form
Music concepts

Real composition, not a worksheet.

Students build a genuine melody on a real staff — pitches, rhythms, chords, lyrics, tempo, and time signature. They can play it back with a piano or acoustic guitar sound.

  • Time signatures (4/4, 3/4, 2/4, 6/8)
  • Melody, chords, and repeated rhythms
  • Tempo as a rate (beats per minute)
PBL outcomes

A song they'll actually share.

The project ends in a printable sheet-music PDF — cover page, standards page, and all — with a QR code family can scan to hear the song. A deliverable, not a packet.

  • Printable, professional sheet music
  • Scan-to-play QR code on every score
  • Live checklist enforces real work
Supplies

Nothing to buy. It runs in a browser.

The whole project — the composer, the piano engine, the analysis, the PDF — lives in one web page. No installs, no student accounts to create, no instruments required.

  • A computer or Chromebook with a web browser Already on hand
  • Headphones (nice for composing in a full room) Optional
  • A printer (for the final sheet-music PDF) Optional
  • A phone (to scan a song's QR code and hear it) Optional
🎹 Tip: The built-in piano uses real recorded samples, so students hear their song even with no instrument in the room. Hand out a printed song, scan the QR code, and the class hears each other's compositions.
The curriculum

Four parts, one song.

Students can start composing on day one; the math parts unlock the ideas behind what they're building, and the last part assembles everything into a project they can print and share.

Part 01 Notes are fractions

Notes are fractions.

For students

Six short slides, each building on the last:

  1. Identify each note and rest as a fraction of a whole measure, in simplest form.
  2. Halve a note — pick the note that completes the split into two equal halves.
  3. Divide a note other ways — into 4, 8, or 16 equal notes.
  4. Decompose a note into smaller notes, then write the expression and the sum.
  5. Group equal notes as multiplication — like 2(1/4) — find the product, then pick the one note that lasts just as long.
  6. Complete a measure that's missing one note — sum what's shown, subtract from the time signature, and pick the note that completes it.

Halving is dividing. Grouping is multiplying. Completing a measure is subtracting. Every music move is a fraction move.

For teachers

Part 1 is six short slides, each with a worked example and a printable blank worksheet. It front-loads the vocabulary — whole/half/quarter/eighth/sixteenth, dotted notes, rests, time signatures — so the composing in Part 2 is grounded in the math.

Standalone practice modules (Notes as Fractions, Completing the Measure, Grouping Notes, and more) let you drill any single skill before or alongside the project.

Part 02 The creative core

Compose your song.

For students

Build your own melody on a real staff. Name it, pick a time signature and tempo, and place notes and rests. Add chords, dotted notes, and lyrics, and choose your instrument — piano or acoustic guitar. Press play to hear it.

A live checklist keeps you honest: at least 10 filled measures, several note lengths, a range of pitches, a chord, a dotted note, some rests, and a rhythm you repeat — like the way London Bridge or Happy Birthday repeat.

For teachers

This is the heart of the project and it's open from day one. The requirements are enforced in real time — green checks appear as each rule is met — so students self-assess and you spend less time chasing missing pieces.

Part 03 Prove it adds up

Measure analysis.

For students

Now analyze your own song, one measure at a time. Group the same-length notes as multiplication — like 2(1/4) — add the groups, rewrite them with common denominators, and show that each measure follows the mathematical rule set by the time signature.

For teachers

Part 3 turns a student's composition into their own worked problem set — every measure is a fraction sum they have to justify. This is where 7.NS.A.1 and 7.NS.A.2 come together on work they're personally invested in.

Part 04 Print & share

Ready to print.

For students

Your finished project assembles itself: a cover page with your song's title, tempo, and score; a scannable QR code that plays it aloud; a Common Core standards page; and all your Part 1–3 work — ready to print as clean sheet music.

For teachers

One print button produces a portfolio-quality packet. Hang the scores on the wall, and anyone with a phone can scan the QR code to hear the composition — a built-in showcase with zero extra setup.

A teacher dashboard shows each student's progress through Parts 1–3 — song title, measure count, and note count — searchable by name and filterable by class period.

Grading

The song grades itself as they go.

The live requirements checklist does most of the assessment for you. When you want a formal grade sheet, build one in seconds with the PBL Math Rubric Maker.

Build a matching rubric

Weight the criteria that matter to you — the composition requirements, the Part 1 fraction work, and the Part 3 analysis — then print it as a blank for reflection or grade live with auto-totaling.

Open Rubric Maker More classroom tools
See it in action

What makes it stick.

Three things turn this from a fractions worksheet into a project students want to finish.

In the browser

A real piano engine.

Recorded piano and acoustic-guitar samples play every note back — with a moving cursor that follows the melody. No instrument needed.

Scan to hear

A QR code on every score.

Each printed song carries a QR code. Scan it and a no-login page renders the score and plays it aloud — shareable with family from any phone.

Print-ready

A finished PDF.

Cover page, standards page, and all three math parts assemble into professional sheet music — a portfolio piece students are proud to hand in.

Launch the composer Explore the practice modules
Try it with your class

Turn fractions into a song.

The whole project runs in a browser — open it, compose a quick song yourself, and you'll see exactly what your students will make. Then email me what you'd change.