1、洪山头光彩小学洪山头光彩小学 潘冲潘冲二年级数学上册二年级数学上册乘法的初步认识乘法的初步认识小飞机里一共有多少人?小飞机里一共有多少人?3 33 3 3 3 3 3 3=153=153 33 33 33 33 36 66 66 66 6小火车里一共有多少人?小火车里一共有多少人?6 6 6 6 6 6 6 6 6 6 6 6过山车里一共有多少人?过山车里一共有多少人?2 2 2 2 2 2 2 2 2 2 2 2 2=142=142+2+2+2+2+2+2=142+2+2+2+2+2+2=14 7 72=142=14 2 27=147=14读作:读作:7 7乘乘2 2等于等于1414读作:读
2、作:2 2乘乘7 7等于等于1414乘号乘号33 3 3 3=156 6 6 6=24你能把上面两个加法算式写成乘法算式吗?你能把上面两个加法算式写成乘法算式吗?35=15 或或 53=1546=24 或或 64=241、摆一摆。、摆一摆。2、画一画,写一写2+2+2=62+2+2=62 23=63=632=64+4+4+4+4=204+4+4+4+4=2054=2045=208 44444444432483284323、填一填7 54、改一改。5 715 33 155、读一读四、总结四、总结提问与解答环节提问与解答环节Questions And Questions And AnswersAn
3、swers谢谢聆听谢谢聆听 学习学习就是就是为了达到一定目的而努力去干为了达到一定目的而努力去干,是是为一个目标为一个目标去战胜各种困难的过程去战胜各种困难的过程,这个过程会充满压力、痛苦和这个过程会充满压力、痛苦和挫折挫折Learning Is To Achieve A Certain Goal And Work Hard,Is A Process To Overcome Various Learning Is To Achieve A Certain Goal And Work Hard,Is A Process To Overcome Various Difficulties For A
4、 GoalDifficulties For A Goal提问与解答环节提问与解答环节Questions And Questions And AnswersAnswers谢谢聆听谢谢聆听 学习学习就是就是为了达到一定目的而努力去干为了达到一定目的而努力去干,是是为一个目标为一个目标去战胜各种困难的过程去战胜各种困难的过程,这个过程会充满压力、痛苦和这个过程会充满压力、痛苦和挫折挫折Learning Is To Achieve A Certain Goal And Work Hard,Is A Process To Overcome Various Learning Is To Achieve A Certain Goal And Work Hard,Is A Process To Overcome Various Difficulties For A GoalDifficulties For A Goal