Unit 3 Numbers 课件（15张PPT）

课件15张PPT。Unit 3 NumbersSing the song4891145526187490411586721964572359993217877624353743+= and=plusexample：
1+1=?
What is one plus one ?It's two.+5+5=?
4+10=?
20+20=?What is ____ plus ____?
It’s ____.practice with your partners18What is ____ plus ____ ?
It's eighteen.work in groups－=-minusexample：
1-1=?
What is one minus one ?It's zero.15-5=?
30-10=?
32-10=?What is ____ minus ____?
It’s ____.practice with your partners18What is ____ minus ____ ?
It's eighteen.work in groupsWhat is ______ plus __________?
It's ________.
What is _____ minus _________?
It's ________.work in groups1.What is thirteen plus nineteen?
2.What is forty minus twenty-nine?
3.What is seventy and twenty-nine?
4.What is seventy minus twenty-nine?
It's eleven.
It's thirty-two.
It’s forty-one.
It's ninety-nine.listen and say the rhyme.One, two, three, four,
Five, six, seven,
Eight, nine, ten,
And now eleven,
Twelve is two plus ten,
Now let's start again.Homework1. plus, minus 两个单词，四英一中。
2. 完成书P24,7b。