Sound Waves Basics

Overview

In this lesson (2 of 30) you will build understanding of sound waves and frequency, then use that knowledge to make simple technology-based adjustments that change how a sound feels in music production.

Learning intentions

• WALT: understand how sound travels as waves and what changes when frequency changes.
• WALT: connect frequency and pitch to musical choices in technology-supported music making.
• WALT: explain (in your own words) how changes you make in an audio tool affect the sound.

Success criteria

• I can describe sound as a wave using clear everyday language.
• I can identify that higher frequency usually means higher pitch.
• I can demonstrate a frequency/pitch change using a simple sound tool (e.g., tone/synth/waveform controls).
• I can give a short explanation linking my sound change to a musical effect.

Curriculum links

• Creating and presenting music: using technology to shape sound and musical ideas.
• Sound and time in music: understanding how musical elements relate to what we hear and make.
• Key competencies: using language/symbols (explaining wave ideas), thinking (making predictions), and managing self (staying on task in a small group).

Lesson structure (50 minutes)

1. 2 min – Welcome and lesson focus

• Recap the unit goal: creating music with technology. Tell students today’s focus is sound waves and frequency, then applying it quickly in a sound tool.

2. 8 min – Demo: “What is a sound wave?”

• Play a short clip of the same note at different pitches, then show a simple visual of a waveform on a screen (teacher-led). Explain that amplitude relates to loudness, and frequency relates to pitch.
• Quick teacher prompts: “What changes when I adjust this slider?” “How would you predict the pitch will change before you try it?”

3. 10 min – Mini-activity: frequency stations (paired)

• Put two students per device. Each pair tries a preset “tone” or “synth” with frequency/pitch controls.
• Students make three small changes: low, middle, high frequency. They label what they hear (lower/higher pitch) using short notes.

4. 12 min – Guided practice: match a pitch goal

• Teacher gives a simple challenge: “Make your sound match Pitch A, then Pitch B” (use built-in tuner/visual indicator if available).
• Students adjust frequency until the indicator matches. They record their starting value and final outcome in one sentence.

5. 8 min – Group discussion: link to musical choices

• As a whole class, students share one discovery: what they expected vs what happened.
• Teacher anchors the thinking: frequency/pitch affects melody choices and instrument-like character; the same rhythm can feel different with different pitch ranges.

6. 6 min – Exit ticket: explain and apply

• Students answer two prompts on paper or in a shared doc:
• “In my own words, what is a sound wave?”
• “How does changing frequency/pitch change the sound in music production?”
• Collect for feedback on understanding.

7. 4 min – Tidy and preview next lesson

• Students close files and return gear. Briefly preview that next lesson will move from understanding to using audio tools to build a short texture or sequence using pitch choices.

Resources

• Laptops/tablets with a simple audio tool (synth/tone generator or audio editor with frequency/pitch control)
• Headphones (one per student where possible) and a shared teacher speaker for demonstrations
• Projector/TV screen for waveform and tuner visuals
• Handout/worksheet page: “Sound Waves & Frequency Notes” (three trials + pitch explanation space)
• Exit ticket slips or a short template (2 questions)
• Audio clips showing the same tone changing pitch (prepared by teacher)
• Optional: printed “frequency = pitch” reference card for scaffolding
• Timer for station timing

Assessment

• Formative: teacher observes paired station work (can students predict and adjust pitch/frequency appropriately?).
• Formative: guided practice “match a pitch goal” results (accuracy using tuner/indicator).
• Summative-for-today: exit ticket responses demonstrating clear understanding of sound waves and frequency-to-pitch link.

Differentiation

• Support: provide sentence starters for explanations (“A sound wave is…”, “When frequency increases…”). Allow students to choose from a limited set of frequency values (low/mid/high).
• Support: reduced writing—students may record with drawings (wave shape idea) plus one-word pitch labels (low/high).
• Extension: ask students to predict the effect on pitch before adjusting (e.g., “If I double the frequency, what might happen to pitch?”). Then require a short cause-and-effect explanation.
• EAL/SEN: use visuals (waveform + tuner) and allow verbal recording of the exit ticket (teacher or device transcription). Keep instructions in clear, short steps with repeated modelling.