The Tokyo 2020 Organising Committee has introduced a specially-formulated mathematics textbook which aims to help students enjoy the study of maths through interaction with Japanese athletes and sporting bodies.
London 2012 Olympic judo champion Kaori Matsumoto of Japan has announced that she will retire following a disappointing return to the mat.
Japan's Olympic and world champion Kaori Matsumoto marked her first appearance of the 2016 International Judo Federation (IJF) season with a victory at the Düsseldorf Grand Prix.
Kaori Matsumoto's form will be scrutinised as the reigning Olympic and world champion competes for the first time in 2016 at the International Judo Federation (IJF) Grand Prix in Düsseldorf.
Japanese judokas dominated the third day of the 2015 World Judo Championships here as Kaori Matsumoto claimed gold in the women’s under 57 kilogram division and Shohei Ono overcame his compatriot Riki Nakaya in the men’s under 73kg gold medal bout.