First classify the puzzles according to color, right angles, and straight edges;

Jigsaw puzzles have been in the history of human society for about 235 years. Jigsaw puzzles can exercise children's logic and cognitive toys, and can also improve children's hands, brains, and heart abilities. For children, most children like puzzles Most of the pictures are based on cartoon charac......

Soft copy refers to the manuscript before the invention of printing. Before the invention of printing, the spread of books could only be copied.

Soft-faced copybook is a copybook with a soft cover for recording text information, and the inner shell is generally printed with horizontal lines for easy writing.

Jigsaw toys are the most common kind of educational toys on the market today. They are also simple and easy to learn, and are especially suitable for the brain development of young babies.

Children's jigsaw puzzles are generally used to exercise children's concentration, learning ability, willpower and so on. The classification of children's jigsaw toys is generally based on age group, and the form of jigsaw puzzles is also based on children's nature.