9787544844185 - 全5册【启发数学思维激发数学兴趣】数字加减悄悄话 我的数学小帮手系列 儿童数学启蒙从小爱数学 趣味数学科学接力童书 (1 risultati)

paperback. Condizione: New. Paperback. Pub Date:2016-07-01 Pages:142 Language: Publisher: Chinese relay press my math helper to the children's mathematical thinking training as the starting point. using the mathematical content in the form of a story. and the creation of a large number of children in daily life are closely linke…