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Resources: 51 – 75 Total: 229
 
Echolocation Student activity
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Electromagnetic waves Student activity
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Electromagnetic waves Student activity
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Electromagnetic waves Whiteboard exercise
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Fermat's principle Whiteboard exercise
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Fermat's principle Student activity
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Fibre optic cables Student activity
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Field changes Whiteboard exercise
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Harmonic oscillations Student activity
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Harmonic oscillations Whiteboard exercise
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Huygens' Principle Student activity
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Resources: 51 – 75 Total: 229
 
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