WEBVTT
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Find the card to match the 10 frames.
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I think the first thing we should do is look at our 10 frames and find out how many black dots there are.
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On the left, the first 10 frame is completely full.
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This means there are 10 in that frame.
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Our second frame only has two out of 10 filled in.
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Our second frame is two.
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10 plus two equals 12.
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Let’s go and check our cards and see how many of them have a total of 12.
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The first card tells us that 12 is one and two more ones.
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Our second card tells us that 12 is one group of 10 and two more ones.
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The third card says 21 is one group of 10 and two more ones.
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Wait!
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We’re not talking about 21.
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We’re talking about 12.
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That means the third card can’t possibly be true.
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Now we have to choose between the first and the second card.
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The first card said 12 is one and two more ones.
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12 is one and two more ones.
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One and two more ones is the same thing as saying one plus two.
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And one plus two equals three, not 12.
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Our last option says 12 is one group of 10 and two more ones.
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12 is equal to one group of 10 and two more ones.
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This card correctly matches our 10 frame.