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Web videos that involve physics are fun to watch. They can be even more engaging with the addition of a few well-crafted questions.
This activity engages students with two videos that relate to color mixing.
One from Science Friday shows the amazing camouflage capabilities of cephalopods via biological pixels called chromatophores. Where's The Octopus? (YouTube v=aoCzZHcwKxI)
The other from the Royal Institution tells the story of how the brain and the receptors in our eyes "invent" magenta. Colour Mixing: The Mystery of Magenta (YouTube v=iPPYGJjKVco)
Add this to your mix of classroom demonstrations and lab activities to thoroughly teach the topic at hand.
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