一年级数学上册课件（青岛版）： 减法练习
图片预览
文档简介
课件19张PPT。减法练习青岛版一年级数学上册1.使同学们经历与同伴交流10以内减法的算法过程，会用适合于自己的算法正确计算10以内减法。
2.初步体会生活中许多问题可用减法计算，进一步理解减法的含义，感受与同伴交流想法的乐趣。
3.培养同学们积极思考、认真倾听他人想法的习惯，培养动手操作和语言表达能力，提高同学们参与数学活动的意识和兴趣。教学目标231143631 + 2=5 – 3=3 – 2=2 + 2=5 – 4=4 + 2=6 – 3=5 – 2=312613431 + 2=5 – 3=3 – 2=2 + 2=5 – 4=4 + 2=6 – 3=5 – 2=312613435 – 1 = 45 – 1 = 45 – 2 = 35 – 1 = 45 – 2 = 35 – 3 = 25 – 1 = 45 – 2 = 35 – 3 = 25 – 4 = 16 – 1 = 56 – 1 = 56 – 2 = 46 – 1 = 56 – 2 = 46 – 3 = 36 – 1 = 56 – 2 = 46 – 3 = 36 – 4 = 26 – 1 = 56 – 2 = 46 – 3 = 36 – 5 = 1 6 – 4 = 1树上还有几个桃子？9 – 4 = ？ 小猴子摘走了几个桃子？9 – 5 = 4花上还有几只蝴蝶？8 – 5 = 3岸上还有几只？2 – 2 = 0减法练习7 – 2 =8 – 5 = 8 – 6 = 9 – 3 =8 – 1 =10 – 6 =536742
想一想，生活中哪些地方用到了减法？
下课
2.初步体会生活中许多问题可用减法计算，进一步理解减法的含义，感受与同伴交流想法的乐趣。
3.培养同学们积极思考、认真倾听他人想法的习惯，培养动手操作和语言表达能力，提高同学们参与数学活动的意识和兴趣。教学目标231143631 + 2=5 – 3=3 – 2=2 + 2=5 – 4=4 + 2=6 – 3=5 – 2=312613431 + 2=5 – 3=3 – 2=2 + 2=5 – 4=4 + 2=6 – 3=5 – 2=312613435 – 1 = 45 – 1 = 45 – 2 = 35 – 1 = 45 – 2 = 35 – 3 = 25 – 1 = 45 – 2 = 35 – 3 = 25 – 4 = 16 – 1 = 56 – 1 = 56 – 2 = 46 – 1 = 56 – 2 = 46 – 3 = 36 – 1 = 56 – 2 = 46 – 3 = 36 – 4 = 26 – 1 = 56 – 2 = 46 – 3 = 36 – 5 = 1 6 – 4 = 1树上还有几个桃子？9 – 4 = ？ 小猴子摘走了几个桃子？9 – 5 = 4花上还有几只蝴蝶？8 – 5 = 3岸上还有几只？2 – 2 = 0减法练习7 – 2 =8 – 5 = 8 – 6 = 9 – 3 =8 – 1 =10 – 6 =536742
想一想，生活中哪些地方用到了减法？
下课