Communication with Light & Sound
Design and build a device that uses light or sound to solve the problem of communicating over a distance
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Communication with Light & Sound means designing a simple light or sound signal to communicate over a distance. We will practise once together, then check a fresh example.
Spend about 12 minutes designing one light or sound message, then checking one fresh signal.
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Start practiceCommunication with Light & Sound practice
Choose distance communication ideas.
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Learning resources
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PhET Interactive Simulations · Practice link — not the full lesson
Sound Waves
Before you open · source notes
Sound Waves supports hands-on exploration for Communication with Light & Sound. Not every lab worksheet.
Free interactive page, no sign-in required for the tested path.
Before you openAsk the learner what they changed in the sim or page and what they observed.
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Source, access and review notes
Public PhET Interactive Simulations page. An anonymous GET on 2026-11-12 returned HTTP 200 with no login or payment prompt for this URL. Opening the link does not save practice or assess mastery. An adult should preview and guide the learner.
PhET Interactive Simulations. “Sound Waves.” External page; Gakuva does not copy, host, embed, or redistribute materials.
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Check understanding
- Design a device that uses light or sound to communicate over a distance (e.g. string telephone, torch signals)
- Build and test the device, identifying what works and what could be improved
- Explain how the device uses properties of light or sound to transmit information
“Could your child design a simple device — like a string telephone or a mirror signalling system — to send a message to someone far away?”
Curriculum record
- Type
- Procedural
- Subject
- Science
- Domain
- Waves, Light & Sound
- Age range
- Ages 6–10
Standards