What is the meaning of 669 mentioned on the Internet?

669 Learning Tool (national patent) is a researcher Liu Xingya of Beijing Weiside Institute for Children's Potential Development. It is a set of learning tools with complete functions and teaching system, which has been specially developed for more than 20 years to improve children's learning ability and develop their potential.

669 learning tool can be used by children aged 2- 18, and it is the carrier of "69 teaching method" in the tenth five-year plan. Children can learn mathematics, language, chess, fine movements, coordinated movements, flower turning, music and thinking transformation training, DIY, art and other all-round human development courses with 669 learning tools.

Extended data:

The main part of 669 learning tool consists of four basic parts: wisdom board, wisdom stick, wisdom bead and wisdom rope. In addition, there are smart boxes with learning tools and digital blocks of schoolbags as auxiliary training tools. Among them, the exquisite design of wisdom board, wisdom stick, wisdom bead and wisdom rope is closely related to practical operation training. Experts devote themselves to research, so that all parts of learning tools can be skillfully matched, and endless combination changes can be deduced, and finally the function of improving various abilities with a set of learning tools can be realized.

Baidu encyclopedia -669