• 4 in 1, suitable for kids from age 5 and up.• Lets the children understand the dialectical relationship between the local and the whole, learn to build a simple combination.• Manual has 36 patterns, 6 sheets exquisite paper cards, hand drill, and case. Enhances your child’s imagination and creativity.• Boosts observation and concentration skills.• A good parent-child bonding that could cultivate the feeling between parent and child.