Using this tone generator, students were able to see that there's sound they can't hear that registers both lower and higher than they're able to hear. Students recognized that there must be the same reasoning for light--there's light that has a higher and lower frequency than they're able to see. We also used a wave generator (must use Java) to compare light waves to water waves. When we changed the source frequency in the wave generator, we saw a difference in each wave's wavelength. We then mapped out the electromagnetic spectrum, acknowledging that there's types of light that we can't see because their frequency is capable of being received by our eyes. Great work today, 6th graders!
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