1、Lesson 4 Welcome to the Dog ShowFattyHattyWelcome to the dog show!Find out the numbers.找出图中的数字。116597410238Find out the rule.找出以下数字的发音规律。31330144015501660177018801990Lets do sums.一起计算总和。420121plusisWhats 20 plus 1？-Its 21.20加1等于多少？ 等于21。20 + 1 = 2120 + 2 = 30 + 3 = 40 + 4 = 70 + 5 = 90 + 10 = 100A:
2、Whats .plus.?B: Its.22334475Can you say it in English?你能用英语说出它吗？5Can you say it in English?2 plus 1 is 3. 2+1=3 3+2=5 4+3=7 5+4=9 2 minus 1 is 1. 2 - 1 = 1 3-2=1 4-3=1 5-4=1minusYes, I can.Choose numbers, “+” or “-” and “=”. 组成等式并读出。 1 1 2 + - = 1 + 1 = 2 2 - 1 = 1 3 8 5 + - =16 9 7 + - =.HWPlease read th numbers of “Lets play” on page 41.作业：朗读课本41页Lets play部分的数字。6Company nameThank You!
