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Lesson 10,seven,7,eight,8,17,18,eighteen,Good morning, class!,Good morning, Mr. Zhang.,Lets count from one to eighteen.,One!,Two!,Three!,Four!,Eighteen!,Whats eight and nine?,Its seventeen.,Very good!,Whats eight and nine? 8 + 9 = ?,Its seventeen.,?,十,+,Whats nine and nine?,Its eighteen.,2 + 3 =?,Whats two and three?,Its five.,5,+,+,=?,1,2,+,=?,3,+,=?,Do the exercises:,I can say them:,Words: plus 加 minus 减 zero 零,Sentence: How much is one plus one?一加一是多少? One plus one is two. 一加一是二。 How much is one minus one? 一减一是多少? One minus one is zero.一减一是零。,