1、UNIT SIX I HAVE FIFTY MARKERS Lesson 21,New words,Seventy 七十,seventy,Eighty 八十,eighty,Ninety 九十,ninety,Lets learn,Who can guess the missing number?,Who can guess the missing number? Its so easy ! Two minus one is one.,2-1=1,Who can guess the missing number? Its so easy ! Three minus one is two.,3-1=
2、2,Who can guess the missing number? Its so easy ! Three minus two is one.,3-2=1,Who can guess the missing number? Its so easy ! Thirty minus twenty is ten.,30-20=10,Who can guess the missing number? Its so easy ! Thirty minus ten is twenty.,30-10=20,Who can guess the missing number? Its so easy ! Si
3、xty minus twenty is thirty.,60-30=30,Who can guess the missing number? Its so easy ! Sixty minus thirty is forty.,60-20=40,Who can guess the missing number? Its so easy ! Sixty minus forty is twenty.,60-40=20,Who can guess the missing number? Its so easy ! Sixty minus fifty is ten,60-50=10,Game Time!,记忆大比拼！,老师将单词卡片按照随意 顺序摆好，学生记忆， 之后老师随意打 乱顺序，学生根 据记忆将单词还原。,Homework,1.Remember these new words. 2.Read the dialogue to your parents.,Thank You!,
