Reply to No doing well with Common Core, but we'll with Singapore math

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[quote=Anonymous][quote=Anonymous][quote=Anonymous]Singapore Math emphasizes making 10's. So in in one example 8+7 the only choice to solve is doubles plus/minus one. I use Singapore Math with my first grader and he has been taught to see the problem as the 8 needs 2 more to make a 10, 7-2 is 5 so 8+7 = 10+ 5= 15.  Now that he is working in the second grade book he has no problem mentally adding by grouping larger numbers into 10's. So 28 + 37, he can rapidly switch to 28+2 = 30, 37-2 =35 so 30 + 35 =65. Or he can switch it to 50+ 15=65. I don't think kids should get marked down because they manipulate the numbers a different way.[/quote]

Exactly.  Tens and ones are most logical and most efficient solution.  This is how the rest of the world operates.

You're confusing them with this bs:
8+7= 8+8-1

when the rest of the world teaches them
8+7 =8+2+5

When you get to two digit and three digit numbers, how will your "double" strategy work?  
How will you explain this with doubles: 87+11?[/quote]

Doubles and counting on are not ends, they are means.  Just strategies for young children while they learn number fluency and begin to become familiar with and memorize math facts. They are not the end goal, just one way of getting there. Start slow to move fast later.[/quote]

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