Saturday, October 13, 2012

UV Beads Are Great for Experiment Projects!

I tried something different during my unit on ozone depletion. . . . and it worked real well! I ordered a bunch of UV-sensitive beads from a company called Educational Innovations. The beads change from white to colored when exposed to the Sun's ultraviolet rays. They come in packages of 240 for $6.95.

Here's what I did. I gave each student a zip-lock snack bag with 12 beads (4 that turn yellow, 4 that turn red, and 4 that turn blue). Next, I explained that each of them would need to design, and carry out an experiment to find the answer to one of the questions listed HERE (or one of their own questions). The students were given 1 week to complete the project.

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