A "serration puzzle" is not a standard term for a type of puzzle. It's likely a descriptive term used for a specific kind of puzzle piece or a brand's product name. However, based on the word "serration," which refers to a saw-like or jagged edge, a serration puzzle for kids would be a type of jigsaw or shape puzzle with interlocking pieces that have jagged or toothed edges. Playing with toy gives a kids a enormous amount of joy, enjoyment and happiness. This toy helps the child to improve the hand-eye coordination, logical thinking, understanding of size. Knobs helps the child to lift and place back indirectly preparing the child to hold pencil. Child experience an interact with their surroundings thru toys. Plus, toys provide plenty their self-esteem and allow them to discover the world they live in.
