Waves Communication Symposium

Overview

Students explore how electromagnetic waves carry information in wireless communication using the PhET simulation “Radio Waves & Electromagnetic Fields”, then apply their understanding to brief research presentations. This lesson consolidates Wave properties and behaviours through technology applications in communication, supporting scientific process and evidence-based communication.

Learning intentions

Students will:

• explain key properties and behaviours of electromagnetic waves relevant to communication (e.g. wavelength/frequency, absorption, reflection)
• use an interactive simulation to investigate how changes in wave parameters affect signal reception
• design and justify a communication “test plan” within their group (what to change, what to measure/observe)
• present a scientific explanation of communication technology using evidence from simulation observations

Success criteria

Students can:

• describe how electromagnetic waves transmit information wirelessly and relate wave properties to signal outcomes
• make predictions before running simulation trials and explain the results using wave concepts
• record clear observational data/notes (settings used and outcomes seen)
• deliver a short presentation using appropriate scientific language and linking evidence to claims

Curriculum links

• PY-11-02: Students explain properties and behaviours of waves, with a focus on electromagnetic-wave communication
• PY-11WS-03: Students conduct investigations using simulation data/observations to collect information
• PY-11WS-02: Students design and evaluate a simple investigation plan based on a driving question
• PY-11WS-07: Students communicate scientific arguments using evidence and scientific language for a specific audience
• PY-11WS-06: Students use scientific process to solve problems (predict, test, interpret, refine)

Lesson structure (45 minutes)

1. 0–5 min · Symposium launch. Teacher reviews the unit focus (“Exploring the World of Waves”) and sets today’s goal: technology applications using an ICT-enabled simulation. Students discuss in pairs what “better reception” might depend on (no tech details yet—just wave ideas).

2. 5–12 min · Quick direct teach: simulation routines. Teacher demonstrates how to operate the simulation (select wave settings, transmit, observe reception, note outcomes). Students complete a “first run” checklist: one change they will test and one outcome they will record.

3. 12–27 min · Group investigation with PhET (Radio Waves). Teacher circulates and prompts groups to use predictions before changing variables; checks that notes include: wave property adjusted, value/setting, distance/environment if applicable, and observed reception quality. Students work in groups of 3–5 to run 2–3 trials and answer: “How does changing wave properties affect signal strength/quality?” They document evidence using concise tables or dot points.

4. 27–38 min · Prepared mini-presentations (symposium). Teacher explains the format: 2 minutes per group plus 30 seconds questions. Students present their communication technology explanation (radio, cellular, or fibre as a conceptual link) using at least two evidence points from the simulation: one describing a wave-behaviour relationship and one showing what changed when settings were altered.

5. 38–43 min · Audience evidence check. Teacher provides a short peer-review protocol: each audience member writes one “claim + evidence” statement and one question. Students swap notes within the class and respond to questions using wave terminology.

6. 43–45 min · Exit ticket (individual). Teacher collects a brief response: students write one paragraph answering “What wave property most strongly influences communication signal quality in our simulation, and why?” plus one limitation/assumption.

Resources

• Computers/tablets with access to the PhET “Radio Waves & Electromagnetic Fields” simulation
• Teacher demo setup (projected display)
• Group investigation recording sheet (prediction, variable changed, observations, conclusion)
• Symposium presentation planning card (claim, evidence, wave terminology, communication link)
• Peer-review evidence prompt sheet
• Exit ticket slips or online form
• Safety/usage expectations for device and screen time

Assessment

• Formative: teacher checks during simulation work for correct use of predictions and clear evidence recording (not just opinions)
• Formative: presentation observations—does each group make a claim supported by simulation evidence and accurate wave language?
• Summative-in-mini: exit ticket paragraph assessing alignment with wave properties/behaviours and evidence-based reasoning

Differentiation

• Support: provide sentence starters for claims and evidence (e.g. “When we increased…, the signal…” “This shows that…”). Offer a template table for recording trials.
• Support: pre-teach or reinforce essential terms students will use in presentations (wavelength, frequency, absorption/attenuation, transmission, reception quality).
• Extension: groups that finish early create an additional “what-if” test question (e.g. testing a third variable) and justify why it is relevant to communication systems.
• EAL/SEN: allow students to present with an adapted structure (bullet-based speaking), and provide a word bank on the recording sheet; allow additional processing time before questions.

Notes for teacher (content focus for communication)

• Emphasise that electromagnetic waves can transmit energy/information through space, and that reception depends on wave-behaviours and conditions represented in the simulation.
• Encourage students to connect simulation outcomes to real technology contexts: radio and cellular rely on electromagnetic transmission; fibre optics relies on guided electromagnetic waves (concept link even if the simulation focus is radio waves).