This was a pretty short unit, and we have learned about some of these concepts before, in our Nervous System and Light and Optics Units. (And even way back in our Illusion Unit!) But it was a fun review, and we loved all the cool Optical Illusions books we got from the library!
The best part of our unit was visiting an optometrist's office. He is a homeschool dad, and he was wonderful at explaining to the children what he does and how all his cool equipment works. We loved it!
A couple other links of interest:
