1. How much does it cost to book a 9.8 yuan for half a year? (1) and
Interest in mathematics (monthly) is 58.8 yuan per 9.8 yuan book for half a year. According to the relevant public information, Interesting Mathematics is an illustrated children's mathematics learning journal under Little Copernicus magazine. Mainly aimed at teenagers aged 8~ 12, the content positioning advocates the concept of "happy learning", which integrates knowledge and fun, guides children with authoritative mathematical concepts and unique ways of thinking, and covers many fields of primary school mathematics. Including common classroom questions, interesting mathematical knowledge, mathematical magic, mathematical games, inspirational stories of mathematicians, etc. Guide children to approach and fall in love with mathematics, let children learn in fun and make progress in happiness.