If at First You Do Not See by Ruth Brown. This is the story of a caterpillar that turns into a butterfly. The pictures on every page are optical illusions which change as you turn the book upside down. Have children discuss why these pictures complement the story. Try to draw some optical illusions.
Many optical illusions change the way lines and geometric shapes appear.
Use rulers to draw precise lines of the same size. Add v s at each end, both turning in on line a, and both turning out on line b. Ask people to tell you which is longer. Arthur s Eyes. This program examines the social issues which surround being different.