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Complementary Colors white paper illlusion

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From: kimberly herbert (kherbert_at_TeacherArtExchange)
Date: Wed Jan 23 2002 - 18:08:42 PST


Our next math unit is geometry. They want us to focus especially on
flips, rotations, translations. I'm going to use tessellations to teach
this concept. They have already seen Jim ? video, and are hyped on the
project. I'm going to have the kids use complementary colors, and in
the display put up white paper the same size as their tessellations. In
science we are going to do a mini unit on the eye, and light spectrum.
Then in writing they are going to write about the project, what
complementary colors are, how our eyes see light and colors, and
instructions on looking at the tessellations then looking at the white
paper to see the colors reverse. Our writing spiral this month is
research, and the principal and TAAS coordinator are not requiring a
full research paper just that the kids find and use information in some
format to convey information and site sources.

My question is why do you get that reversed effect? If you have a source
on the web you recommend, please forward it. If you have clear
explanation, can I let the kids cite you as a source? I need information
to explain it to the kids 5th Grade GT. Their favorite questions are But
Why, how come it doesn't ....., and But what if you.... A local deputy
came to explain they can now be arrested and jailed (they are older than
10). He was trying to explain how childish pranks can get out of hand
and result in arrest. My kids are asking about Double Jeopardy, how
evidence is collected, and why police officers can take you
fingerprints, hair, and DNA if you have the 5th amendment right not to
incriminate yourself. He said he had never had 5th graders quote the
Bill of Rights, much less pull out a copy to show him.

Kimberly