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1、,北師大版二年級數(shù)學多媒體 課件,1塊1塊地數(shù),共20塊,擺一擺,數(shù)一數(shù),1塊1塊地數(shù),共20塊,2塊2塊地數(shù),共20塊,1塊1塊地數(shù),共20塊,2塊2塊地數(shù),共20塊,5塊5塊地數(shù),共20塊,1塊1塊地數(shù),共20塊,2塊2塊地數(shù),共20塊,5塊5塊地數(shù),共20塊,10塊10塊地數(shù),共20塊,1塊1塊地數(shù),共20塊,2塊2塊地數(shù),共20塊,5塊5塊地數(shù),共20塊,10塊10塊地數(shù),共20塊,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,1塊1塊地數(shù),共20塊,2塊2塊地數(shù),共20塊,5塊5塊地數(shù),共20塊,10塊10塊地數(shù),共20塊,1,
2、2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,2,4,6,8,10,12,14,16,18,20,1塊1塊地數(shù),共20塊,2塊2塊地數(shù),共20塊,5塊5塊地數(shù),共20塊,10塊10塊地數(shù),共20塊,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,2,4,6,8,10,12,14,16,18,20,5,10,15,20,1塊1塊地數(shù),共20塊,2塊2塊地數(shù),共20塊,5塊5塊地數(shù),共20塊,10塊10塊地數(shù),共20塊,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,2,4,6,8,10,12,14,16,18,20,5,10,15,20,10,20,7,2,14,數(shù)一數(shù),填一填,4,3,12,說一說,算一算,5,5,5,15,塊,3,3,3,3,3,15,塊,4,5,20,練習,10,3,30,10,3,30,小結,通過本節(jié)課,你學到了什么?,作業(yè)布置,教材第17頁第4題。,謝謝,任紅紅,