Incoming Resources
- Optical illusions, the science of visual perception, Al Seckel
- Harry Potter magic eye book, 3D magical creatures, beasts and beings
- Brain busters, Gianni A. Sarcone and Marie-Jo Waeber
- Motion madness, Gianni A. Sarcone and Marie-Jo Waeber
- What's hiding?, [design, illustration & text by Mario Gomboli]
- Cool optical illusions, creative activities that make math & science fun for kids!, Anders Hanson and Elissa Mann
- What will it be?, [design, illustration & text by Mario Gomboli]
- White on black, Tana Hoban