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【教学内容】西师版教材四年级下册第78~79页的例1、例2,练习二十二第1~2题。【教学目标】1.在具体的情境中,体会小数加、减法的意义与整数加、减法的相同意义。2.探索小数加、减法计算方法的过程,能正确计算小数加、减法。3.能根据创设的现实生活情境,灵活地用小数的相关知识解决现实问题,发展应用意识,体会数学与生活的密切联系。【教学重点】探索小数加、减法计算方法的过程,正确计算小数加、减法。
Teaching content] Western Division version of the textbook of the fourth grade on the next 78 to 79 cases of Example 1, Example 2, Exercise 22 on the 1st ~ 2 questions. Teaching Objectives 1. In specific situations, appreciate the meaning of decimal addition, subtraction and integer addition and subtraction of the same meaning. 2. To explore the decimal addition and subtraction method of calculating the process, the correct calculation of decimal addition and subtraction. 3 according to the creation of real life situations, flexible use of decimal knowledge to solve practical problems, the development of application awareness, understanding of mathematics and life are closely linked. 【Teaching】 To explore the decimal addition and subtraction method of calculating the process, the correct calculation of decimal addition and subtraction.