Now You See It
We made the optical illusion in the manual. We took a piece of plain cardboard and cut it into a square. Turned it so it looked like a diamond. Then we drew a fishbowl on one side and a fish drawn in the middle on the opposite side. Secure diamond to a pencil with tape.
Put pencil between your hands and twirl back and forth. The fish gives the optical illusion that it is in the fishbowl.
We read Hear this! An exciting way to learn about your senses by Sally Hewitt. This book was full of great experiments (so we did way more than I originally planned, oh, the joys of homeschool).
Finally we watched Here hear!
We definately enjoyed working the senses badgework into our homeschool. I found an awesome book called Stop, Look & Listen: Using Your Senses from Head to Toe by Sarah Williamson. I was already into this theme when I found it. Maybe I will use it again sometime.