Polarized Filters.....where, how, help!!??

Question

I have a science fair project and i have to demonstrate why the sky is blue and i have to filter out colors.....i think (help) me
do you know anywhere that sells them for a good price?do u know what kind of polarized filters would be best to use in this experiment?
to give you better insite of my project the pocedure are as followed:
Shine the maglite into one end of a glue stick and hold the other end of the glue stick approximately one centimeter from the white background. Notice that the end of the glue stick closer to the Mini-MagLite is a different color than the end nearer the white background. Notice the color of the circle on the white background. Place two glue sticks end to end, and attach them together with the clear tape. Repeat the investigation with the Mini-MagLite, and notice any difference in the colors along the glue sticks and in the colored circle on the white background. Continue to attach more glue sticks with the clear tape and to notice the changes in color.

Answer 1

For a good selection of optical stuff, from professional to hobby, try Edmund Scientific. Mail order to anywhere. I'll bet they have some polarizing material that is a plastic film or plastic sheet for cheap.

Answer 2

Wal Mart has a nice selection of cheap sunglasses - some are polarized. Just ckeck the tags. Look for one with thin, flexible polarized lenses. I've even seen some of these at the dollar stores, but these aren't always polarized. Again, check the tags. Good luck!