the girl and the difficult challenge(精裝)

A girl is challenged by her father to solve an intriguing Maths problem, in exchange for going out to get ice cream. Can she devise a way to find the answer quickly? Read on to find out the girl''s ingenious solution!The I''m a Maths Star! series comprises challenging Maths puzzles, presented in story form. Puzzles are described and then solved, step-by-step, through an engaging storyline, and using various Maths heuristic techniques that are also taught as part of the world-renowned Singapore Maths curriculum. Through illustrations and an engaging storyline, children will learn Maths heuristics, and be inspired to persevere in understanding, representing, and solving fun and intriguing Maths problems!