“乘数是三位数的乘法”编排特点及教学沈长生义务教育六年制小学数学课本第七册第三单元中的”乘数是三位数的乘法”，与原教材相比它不仅将乘数是两位数的乘法分开编入了第六册，改变了原教材合编于同一单元状况，而且例题的选择、编排设计也很有特色。教师要透彻理解编... “Multiplier is a three-digit multiplication” choreographed features and teaching Shen Changsheng compulsory education six-year primary school mathematics textbook seventh unit in the third unit “multiplier is a three-digit multiplication”, compared with the original textbooks not only The multiplier is a two-digit multiplication separately into the sixth book, changing the original textbook co-edited in the same unit status, and the choice of examples, layout design is also very unique. Teachers must thoroughly understand ...