The Montessori teaching aid "Segen Board" is called Segen Board because its inventor is a man named Segen. It is a teaching aid for children's mathematics enlightenment, which is used to educate children to learn numbers. There is not only version a, but also version B.

The two wooden boards of Saigen Board A are divided into five grids, the other grid prints the number 10, and the other nine digital boards print 1-9. The two wooden boards of Saigen Board B are divided into five grids, with a grid of *** 10, and there are numbers 10-90 and 1-9 in the two grids.