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Christmas Play963 viewsChristmas Play
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Children935 viewsChildren
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The Paradox of the Duality of Light940 viewsWhen I taught SAT, the discussion of star's "red-shift" turned off topic and into an explanation of light being both a particle (photo-electric effect) and a wave (optics and a prism).
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Student971 viewsStudent
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Adult Advanced ESL Instruction929 viewsAdult Advanced ESL Instruction
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Adult Advanced ESL Instruction951 viewsAdult Advanced ESL Instruction
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