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| Okay, the lesson for today is about common core. | |
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| If you are a parent, when you learned 8 x 5 you remembered your times tables and came up with 40. | |
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| Common core uses commutativity, automaticity and associative properties. | |
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| 8 x 5 = (4 x 2) x 5 and then 4 x (2 x 5) which then becomes 4 x 10. | |
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| You are probably thinking that at this point you would use your times tables for 4 x 10 to come up with 40. | |
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| You would be wrong. Here you would have Fluency Practice, Concept Development, Application Problems and Student Debriefing. It's worse for long division. | |
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