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快乐的小鸭,课后作业,探索新知,当堂检测,课堂小结,十几减7，6的退位减法,口算。,119,118,139,169,128,148,159,158,129,178,149,138,179,168,189,2,7,4,3,4,7,6,6,3,5,5,9,8,9,8,探究点十几减7，6的退位减法,草地上还有多少只？,12,7,5,1275,10,2,1275,2,5,7512,1275,5,12,7,5,工具箱,11,6,5,14,6,8,算一算，摆一摆。,1圈一圈，填一填。计算157。,想：157107,8,8,3,(圈一圈略),3,7,8,5,8,8,3,8,2画一画，填一填。116(2)147,(圈一圈略),7,5,3119117137146136177126156167127157168,2,4,6,8,7,10,6,9,9,5,8,8,4(1),12,5,(2),6,9,15,15,6,9,或96151596,计算十几减7，6的退位减法时可以用破十法、平十法、想加算减法等来计算。,归纳总结：,5.算一算，用小棒或计数器说明你的计算过程。,工具箱,夯实基础（教材P7练一练）,147=126=,7,6,6.画一画，填一填。,3,3,136=,7,7.看谁一次能算对。,156,127,137,116,167,146,157,136,9,5,6,5,9,8,8,7,8.小熊射门。,或6713或1367或1376,9填一填，圈一圈。(得数是几就圈几个)(1)136(2)117,辨析：没弄懂题意，习惯性圈减数,(圈一圈略),7,4,作业1.从课后习题中选取；2.完成练习册中本课时的习题。,
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