1. Develop independent learning ability and stimulate exploration 2. Answer card without cutting, hand tear can be, easy to use 3. Resistant to water damage, not easy to break, lightly wipe clean 4. Ring-shaped buckle, not loose pages, easy to play 5. Paste design, can be used repeatedly 6. White cardboard, soy ink, safe and harmless 7. Applicable age: 36 months or more baby 8. Material: paper
