一、教材分析随着数与计算内容的延伸,解决问题的范围也随之扩大。在“除数是一位数的除法”“两位数乘两位数”和“小数的初步认识”中,将计算教学与解决问题的教学有机地结合在一起,进一步巩固以前所学过的一步计算解决问题和两步计算解决问题。在“统计”中介 First, the textbook analysis As the number and calculation of the content of the extension, the scope of the problem-solving also will be expanded. In “divisor is a digit division ” “two-digit by two digit ” and “preliminary understanding of decimal ”, organically combine calculation teaching and problem solving teaching to further consolidate Previously learned one-step calculation solves the problem and two-step calculation solves the problem. In the “Statistics ” intermediary