Mathbus is a math education site (app) of Key Publishing, providing math textbook introductions, free math video lectures, and various learning content.

#Textbook introduction
You can use the curriculum and series introduction of Key Publishing math books from infants to high school, and the textbook preview service.

#Online lectures
You can view easy and fun elementary and middle school math lectures provided by QR codes all at once.

#Learning content
In addition to the ‘I’m a teacher too’ content that explains coolly like a teacher and reviews fun like a game, you can utilize various learning materials such as textbook-related data rooms, visible content, and analog clock viewing.

#Online evaluation
This is an online test program that allows you to check whether you have studied Key Publishing math books correctly. Check the learning effect with the online evaluation.

#Community
Special benefits only for teachers~ Grab math with Key Publishing, including the teacher-only data room, notices and 1:1 inquiry bulletin board, and distributor information!