四年级unit9.pptVIP

colors What’s the missing number? 10 20 30 ? 40 * * * * 左右手 老师比手势 抢答-学生说算式 仿照A部分，进行师生间的对话以及学生与学生间的对话。 U9 It’s one hundred. green red blue pink orange yellow brown white black grey purple T-shirt red and green sweater yellow and brown trousers black and white sock grey skirt pink and brown brown shoes He/she wears_____________. twenty socks Can you count 11—20 ? 11-eleven 12-twelve 13-thirteen 14-fourteen 15-fifteen 16-sixteen 17-seventeen 20-twenty 19-nineteen 18-eighteen two twelve twenty three thirteen thirty four fourteen forty five six seven eight nine ten one hundred nineteen ninety eighty eighteen seventeen sixteen sixty fifteen fifty seventy 21 twenty-one 32 thirty-two 43 forty-three 54 fifty-four 65 sixty-five 76 seventy-six 87 eighty-seven 98 ninety-eight 100 one hundred 200 two hundred …… Eleven plus nine is twenty. 11 9 20 + Eleven and nine is twenty. right wrong Lets play a game! 15+60=? …and…is …. 32+23=55 Thirty-two and twenty-three is fifty-five. 42+36=78 Forty-two and thirty-six is seventy-eight. 82+18=100 Eighty-two and eighteen is one hundred. …… 40 + 24 64 Is that right？ √ Yes, it’s right. Good! 46 + 64 90 ? Please think again. forty-six and fifty-four is… Let’s say! 5 15 25 ? 45 3 6 9 12 ? 8 10 18 28 ? * * * 左右手 老师比手势 抢答-学生说算式 仿照A部分，进行师生间的对话以及学生与学生间的对话。 * *