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• Notes, booklets, worked examples and page designs — © R Stewart, unless credited otherwise on the page.
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• Yenka Simulation Guide — © R Stewart, 2024.

Made by other teachers

• J Keegan — National 5 Practical Electronics past-paper-style questions (2025). Used with permission.
• S Woodhouse — Block 3 practice questions and answers (2026). Used with permission.
• R Stewart & S Woodhouse — Electricity Block 3 booklet (2026).
• Mr Davie (September 2025 update by Mr White) — the Higher and National 5 Physics "Past Paper Finder" documents, shared freely by their authors. Past-paper questions and marking instructions © Qualifications Scotland (SQA).
• Mr McDonald (2024) — the National 5 Engineering Science "Past Paper Finder", shared freely by its author. Questions © Qualifications Scotland (SQA).

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• PhET Interactive Simulations, University of Colorado Boulder — simulations embedded under CC BY 4.0. phet.colorado.edu
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• Embedded videos — "The Other Mr Stewart" (YouTube @mrstewartphysics) and Mr Bell – Practical Electronics. Videos remain © their respective creators and are embedded via YouTube; each clip is credited where it appears.

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