Unit 3 Numbers and Animals Part B,Play A Game,快速抢答,13,18,15,40,19,20,30,70,50,60,80,90,17,Lets learn,How much is . and .,Its,16+2,16+3,14+3,15+5,15+1,17+3,eighteen,seventeen,sixteen,twenty,twenty,nineteen,How much,13 + 18 = ,thirty-one,31,How much,18 + 26 = ,forty-four,44,How much,25 + 28 = ,fifty-three,53,How much,37+ 41 = ,seventy-eight,78,30,thirty,40,forty,50,fifty,比一比，找一找,总结：在整十的数字单词后加-，再加数字,35,44,53,thirty-five,forty-four,fifty-three,group work,2个人一个小组，小组协作，一问一答,Game,从固定数字区间里随意写出一个数字，猜猜老师抽
