1、Lesson 4 Welcome to the Dog Show! How many dogs are there? There are seven dogs. How many dogs are there? There are four dogs. whats A plus B? five plus two is seven = 7 Whats five plus two? Its seven. four minus one is three. Whats four minus one? Its three. Lets play 1,3,5， 7， 9，11，13，15， 17 2,4,6
2、， 8，10，12， 14， 16， 18 1,5,10,15,20,25,30,35 6+8= 11+44= 6 plus 8 is _. 14 14 11 plus 44 is _. 55 55 -Whats 6plus 8? -Its_. -Whats 11plus 44? -Its _. 14 55 6+8=14 11+44=55 25-12= 25 minus 12 is _. 18-11= 18 minus 11 is_ . 13 13 7 7 -Whats 25 minus 12? -Its _. -Whats 18 minus 11? -Its _. 13 7 25-12=13
3、 18-11=7 Can you say it in English? Can you say it in English? Can you say it in English? Yes, I can. Nine plus three is six. 9+3=12 Can you say it in English? Can you say it in English? Can you say it in English? Yes, I can. Twenty minus eleven is nine. 20-11=9 Count and say. 1.12+_=21 2. _-25=11 3
4、. 28-15=_ 4. _+35=99 Twelve plusis twenty-one. 9 36 13 64 Homework 1Do five sums in English. 2Read the text. Unit3 Lesson4 Welcome to the Dog Show! 一教学目标一教学目标: 1、学生能够对 1 至 100 的数字发音有更深刻的印象 , 明白其中的发音规律。 2、学生能够区别 plus 与 minus 的发音和意思。 3、学生能够掌握加、减等式的句型表达;学生能够对相关的问题作出回答。 例如:Can you.?/Yes,I can.A plus B i
5、s C. / A minus B is C. 二教学重点难点二教学重点难点: 重点 :1. _plus_is_. 2. _minus_is_. 难点 :数字的发音较难 :eleven, twelve, thirteen,fifteen 易混淆 :13-30, 14-40, 15-50, 16-60, 17-70, 18-80, 19-90 三教学用具与方式：三教学用具与方式： 动物卡片/数字卡片 /竖式卡片;采用听，读，说的教学方式。 四教学过程：四教学过程： 1.Warm up:Greetings What is this,boys and girls?(show the picture)
6、How many dogs are there? Let us count.(one two there four.) (Another picture)How many dogs are there? There are .(one two there four.) (picture A and B)How many dogs are there? There are . We can say “WhatsA plus B ?” 2.New lesson: Whats A plus B ? Its C. And then ; Whats A minus B ? Its C. 3.counting game Students stand one by one and count(one two there four .ninety-niene ;one hundred) 4.Find out the answer Whats A plus B ? Whats A minus B ? (Show the cads) 5. Practise Do some sums in pairs. Do some subtraction. 6.Home work Read the text. Do five sums in English.
