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15
14
18
19
20
What’s in the classroom?
How many blackboards?
How many doors?
How many desks and chairs?
How many books?
Look and count
Part C Let’s do quickly
A: What is seven and eight? 7加8是几？
B: Seven and eight is fifteen. 7加8是15.
8﹢6﹦? 12﹢4﹦?
10﹢8﹦? 13﹢4﹦?
14﹢5﹦? 11﹢9﹦?
Part C Look and answer
How many … do you have?
fifteen erasers
thirteen pens
twelve crayons
twenty books
eleven bags
Part C Listen and write
9
12
1
18
10