These versatile optical illusion building blocks can be used across the curriculum whether it's building geometric patterns in math or exploring optical illusions in art and science. The opportunities for problem-solving and creativity are endless.

The pack includes 8 different colors and they come in 3 different sizes.

• Large - 1 block per page, approx. 7" wide (18cm)
• Medium - 4 blocks per page, approx. 4" wide (10cm)
• Small - 30 blocks per page, approx. 1.5" wide (4cm)

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