Multi-Station Wave Lab

Overview

Students rotate through a laboratory of three stations to investigate wave properties and behaviours using both PhET simulations and physical apparatus. They compare virtual and real measurements for sound waves, waves on a string, and bending light, building explanations of how wave behaviours are consistent across contexts.

Learning intentions

• Students will explain key wave properties (amplitude, wavelength, frequency and period) and relate them to measurable outcomes.
• Students will describe wave behaviours for sound and transverse waves and explain evidence of wave nature in physical data.
• Students will compare bending/light behaviour from a simulation with physical observations and record differences responsibly.
• Students will use scientific process skills to plan, collect, and analyse data, then communicate findings.

Success criteria

• I can identify and label wave properties (amplitude, wavelength, frequency/period) from diagrams or measurements.
• I can use appropriate variables and produce a table/graph that links wave behaviour to a changing condition.
• I can compare virtual and physical results and explain at least one source of error or limitation.
• I can communicate a clear conclusion using scientific language and units.

Curriculum links

• PY-11-02 — explain the properties and behaviours of waves (wave properties; sound and light; behaviours such as bending and wave effects).
• PY-11WS-03 — conduct scientific investigations to collect data and information across stations.
• PY-11WS-06 — use scientific process to solve scientific problems by planning, processing data, analysing, and communicating results.

Lesson structure (45 minutes)

1. 0–5 min · Launch and safety. Teacher explains today’s rotation routine, assessment expectations, and safety for audio equipment and light sources. Students review station roles (recorder, equipment manager, data analyst) and read the station cards.

2. 5–12 min · Station 1: Sound Waves (PhET + phone/noise setup). Teacher demonstrates how to set the simulation controls and how to collect data without damaging hearing (use low volume and respectful distance). Students run the PhET simulation to measure/observe frequency and wavelength relationships, then record physical measurements using an appropriate microphone/phone sound app or provided sensor if available.

3. 12–19 min · Station 2: Wave on a String (real apparatus + guided comparison). Teacher checks correct setup (string tension, driver frequency, measuring scale position) and models how to measure wavelength from a still/slow-motion moment. Students measure wavelength and amplitude for at least two frequencies, record frequency input and observed wave features, and note any differences between visual and measured values.

4. 19–26 min · Station 3: Bending Light (PhET + beam observation). Teacher reviews safe handling of light sources (no direct viewing, use screen/bench method) and where to place a protractor/surface for measurement. Students use the bending light simulation to predict/refine the relationship between incidence angle and refraction/bending, then observe a physical light-beam through a provided medium/arrangement and record angles for comparison.

5. 26–35 min · Data processing sprint (whole-class small-group). Teacher circulates to support units, variable identification, and graph/table choices; prompts: “What changed? What did not?” Students convert raw readings into wave property data (wavelength, frequency/period, amplitude where relevant) and add a short comparison statement for each station (virtual vs physical).

6. 35–42 min · Scientific explanation (claim-evidence-reasoning). Teacher provides a template and modelling for a CER response linking wave behaviours to measurements and one reasonable uncertainty. Students draft one shared CER conclusion covering at least two wave behaviours across stations (e.g., sound periodicity and bending trend).

7. 42–45 min · Exit ticket. Teacher collects a quick check and clarifies any misconceptions. Students complete an exit ticket: “One wave property and one behaviour I can explain is…; my evidence is…” including one unit and one comparison or error source.

Resources

• Three PhET simulation-ready devices or computer stations with station cards (Sound Waves, Wave on a String, Bending Light).
• Sound measurement tools: microphone/phone sound meter or provided sensors, speaker/interface, worksheets with unit spaces.
• Wave on a string apparatus: string, driver/vibrator, power supply (teacher controlled), retort stand/clamps, metre rule, marker/tape for scale reference.
• Bending light apparatus: safe light source (laser pointer/LED as provided), protractor, screens/angle markers, provided medium setup (e.g., acrylic block/water trough if available).
• Data tables/graph paper, pens, calculators, timer.
• Safety instructions sheet and role cards.

Assessment

• Formative observation during rotations: correct variable control, safe equipment handling, and accurate recording (teacher checklist).
• Data quality check: students’ tables/graphs include units and consistent measurement method (quick peer or teacher review at transitions).
• Exit ticket: identifies at least one wave property and one behaviour with evidence and a brief uncertainty/error or limitation.

Differentiation

• Support: sentence starters for comparisons (“In the simulation…, in the physical setup…”), and worked examples of how to measure wavelength from a snapshot or slow wave condition.
• Support for graphs: provide a pre-labelled graph axis option (wavelength vs frequency, angle of incidence vs observed bending/refraction).
• Extension: for students who finish early, prompt them to propose a plausible reason for differences (instrument resolution, human reaction time, tension changes, alignment/parallax) and revise their CER accordingly.
• EAL/SEN: offer reduced reading on station cards (key steps as icons and short directives), allow oral recording of measurements, and provide unit reminders (Hz, s, m, degrees).