What is the origin of spelling toys?

The jigsaw puzzle invented by British Sperbury in18th century is the best-selling toy in the world. 1760, Sperbury worked as a teacher at Hasser School in England, drew a map of England and Wales, cut the map into irregular pieces, and then asked his students to piece it together. Students like this positive thinking and hands-on learning method very much, and other schools have adopted this method. Toy dealers discovered this popular entertainment method, so they changed the puzzle content into various colorful patterns and made a new toy to sell. This kind of toy was originally made of wood, but later it was changed into cardboard. At the same time, the cutting tool is improved, the quality is improved, the production cost is reduced accordingly, and the jigsaw puzzle is more popular. Educational toys have a good enlightening effect on developing children's intelligence and training children's judgment, thinking and association.