牛津小学英语3Bunit5A部分课件.ppt

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1、Unit5PlusandminusCanyoureadthesenumbers?51015131920121816141317Playagame:范围：6-16猜数字猜小了，老师会提示：plus猜大了，老师会提示：minus看谁猜得又快又准！That’sright.Sorry.You’rewrong.√×那是对的。对不起。你是错的。看看谁在动画中听到的数字最多？Catchthenumbers:1562347891011121314151617181920考考你的记忆力！看看谁能记住动画里的算式？10+5

2、7+1320-1218-4tenplusfivesevenplusthirteentwentyminustwelveeighteenminusfourplus+sevenfiveplusplusplus+sixfourplusplusplusplus+twelvenineplusplusplusplus+onefiveplusplusplusplus+threethreeplusplusplusplus+++7+56+4+1+512+93+3+()+()=201+19…2+183+174+165+156

3、+147+138+129+1110+10105+=?What’stenplusfive?It’sfifteen.=15Pairwork:A:What’s____plus____?B:It’s___.A:That’sright.Sorry.You’rewrong.It’s____.⑴10+5=⑵7+13=151920√×⑴9+4=⑵10+5=⑶13+7=⑷11+3=A:What’s____plus____?B:It’s___.A:That’sright.Sorry.You’rewrong.It’s____

4、.8_2minus8-211-713-6eightminustwothirteenminussixelevenminusseven(1)10-6(2)20-12(3)19-7(4)18-4eighteenminusfour18-4=?14It’sfourteen.What’s?Pairwork:A:What’s____minus____?B:It’s___.A:That’sright.Sorry.You’rewrong.It’s____.⑴20-12=⑵18-4=81614√×⑴14-7=⑵20-12=

5、⑶18-4=⑷17-6=A：What’s____minus____?B：It’s___.A：That’sright.Sorry.You’rewrong.It’s____.11-6=6+3=20-11=15-5=19-16=4+3=17-12=5+3=8371095Pickapples:抢泡泡看哪只海豚最快抢到正确的泡泡！由小丑出题，三个海豚在5秒钟内抢到正确的泡泡。看哪只海豚反应最快！Timetosay:Goodbye!