牛津苏教三下Unit5Plusandminus公开.ppt

,Unit 5 Plus and minus,Sorry, youre wrong. (对不起，你答错了）,Oh，no. （哦，不）,zoo,Lets go to the zoo.,动物园里有各种各样的动物,请你来数一数各有多少只,好吗?,Lets go to the zoo.,Count(数一数),one,two,three,four,five,1+4 =?,Whats one plus four?,Its five.,5,+,2+5 =?,Whats two plus five?,Its seven.,7,+,3+6 =?,Whats three plus six?,Its nine.,9,+,1+4,3+6,2+5,one plus four,two plus five,three plus six,Practice: A: Whats plus? B: Its ,A:Whats five plus two? 5 + 2 = ?,B:Its seven.,?,A: Thats right.,7,十,Questions:,?,A: Whats eight plus five? 8 +5 =?,B: Its thirteen.,A: Thats right.,13,Questions:,Whats ten plus four? 10 + 4 = ?,Its fourteen.,?,Thats right.,14,十,Questions:,5,4,3,2,1,15,16,17,18,19,Whatsplus? Its twenty.(20),Questions:,fifteen,sixteen,seventeen,eighteen,nineteen,Sorry, youre wrong. (对不起，你答错了）,Oh，no. （哦，不）,13thirteen,14fourteen,15fifteen,16sixteen,17seventeen,18eighteen,19nineteen,20twenty,12twelve,Whats missing？,Whats nine minus four ?,Its five,9-4=?,Whats eight minus two?,Its six.,8-2,20-4=?,A: Whats twenty minus four？,B: Its sixteen,9-4,8-2,20-4,nine minus four,eight minus two,twenty minus four,11-6=,9-4=,7-2=,12-8=,10-1=,14-7=,6-4=,13-5=,8,9,7,4,5,2,Questions:,1,2,7,6,3,4,5,A: Whats plus /minus? B: Its A: Thats right. Sorry, youre wrong. Oh, no.,Make a conversation,设计一份加减法口