Lesson 2 What’s the missing number? 课件

课件16张PPT。Lesson 2
What's the missing number?Goals for the lesson:1. I can read the words of numbers .
（我能说会读一些数字单词。）
2. I can understand the conversation .
（我能理解对话。）
3. I can read the conversation .
（我能朗读对话。）
4. I can act the conversation .
（我能表演对话。） 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 Goal 1：I can read the words of numbers . ?I can read the words of numbers . — What’s the missing number？
— It’s ________ .14 - ? = 2
20 - ? = 5※ Fourteen minus twelve is two.
※ Twenty minus fifteen is five. What’s the missing number?
Boys and girls, look here. What’s the missing number?
Sorry, I don’t know.
Think it over. Sixteen minus two is fourteen. Eight minus two is six.
Oh, I see. The missing number is eight.
What a clever boy! What's 90 minus 30 ?It's 60 .100 — 50 = 76 — 45 = 87 — 39 =96 — 27 =Look and match.(看图并连线）1. 85
2. 38
3. 100
4. 76
5. 27 one hundred
twenty-seven
thirty-eight
eight-five
seventy-six找不同类的单词( )1. A. seventy B. forty C. thirty-three
( )2. A. clever B. nine C. twenty
( )3. A. fifty B. eight C. boy
( )4. A. one hundred B. sixty C. number
( )5. A. minus B. clever C. plus CACCB— What’s 100 minus 40? — It’s 60.4512133112260320222540100152Let’s play a game