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I couldn't find the phrase "number sentence" on the Common Core standards website, no idea where that comes from. Possibly from Pearson Education inc themselves

by DougBTX 12y ago

I couldn't find the phrase "number sentence" on the Common Core standards website, no idea where that comes from. Possibly from Pearson Education inc themselves? Here are a couple of examples from the standards themselves: > Apply properties of operations as strategies to add and subtract. Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.) http://www.corestandards.org/Math/Content/1/OA/B/3/ http://www.corestandards.org/Math/Content/1/OA/B/3/ This one seems to be leading to lots of "why are they asking this" questions: > Understand subtraction as an unknown-addend problem. For example, subtract 10 – 8 by finding the number that makes 10 when added to 8. http://www.corestandards.org/Math/Content/1/OA/B/4/ http://www.corestandards.org/Math/Content/1/OA/B/4/ The confusion seems to be the transition from "understand the relationship between these two things" (what the standards ask for) and "you must do all subtraction in this weird way" (which seems to be how some people interpret the standards).

analog31 12y ago
My kids started grade school a few years before common core was launched, and I remember "number sentence" was already in use. I, too, struggled to find out what a number sentence is. They also spent a fair amount of time with "you must all do subtraction in this weird way" and similar stuff. An amusing anecdote is that the schools switched over to traditional arithmetic (carrying, borrowing, etc.) during the weeks or months leading up to each standardized test battery. As I understand it, multiple cycles of math teaching fads swept through the schools between when I learned math (a long time ago) and common core. There was a period in my locale when 8th grade math was taught in such a way that the bright kids tuned out due to boredom and nobody was prepared for algebra. Debate over the math curriculum actually swung a school board election! (Many parents, including my spouse and me, quietly taught our kids "regular" math as we understood it, at home. I didn't know what "regrouping" was, but taught them borrowing instead. I fear that the result of widespread home coaching is that the "good" schools get rewarded for high test scores and poor families have no idea why their kids aren't learning math). I don't blame anybody for being confused by the subtle distinction between standards, curriculum, and testing. We've heard all of the things that common core isn't. On the other hand, when some states began to publish their common core standards, I took a look at the math portion, and it seemed surprisingly "normal" to me. As for Pearson, I wonder if one company owning both the curriculum and the testing process is a good thing.

by DougBTX 12y ago

analog31 12y ago

My kids started grade school a few years before common core was launched, and I remember "number sentence" was already in use. I, too, struggled to find out what a number sentence is. They also spent a fair amount of time with "you must all do subtraction in this weird way" and similar stuff. An amusing anecdote is that the schools switched over to traditional arithmetic (carrying, borrowing, etc.) during the weeks or months leading up to each standardized test battery. As I understand it, multiple cycles of math teaching fads swept through the schools between when I learned math (a long time ago) and common core. There was a period in my locale when 8th grade math was taught in such a way that the bright kids tuned out due to boredom and nobody was prepared for algebra. Debate over the math curriculum actually swung a school board election! (Many parents, including my spouse and me, quietly taught our kids "regular" math as we understood it, at home. I didn't know what "regrouping" was, but taught them borrowing instead. I fear that the result of widespread home coaching is that the "good" schools get rewarded for high test scores and poor families have no idea why their kids aren't learning math). I don't blame anybody for being confused by the subtle distinction between standards, curriculum, and testing. We've heard all of the things that common core isn't. On the other hand, when some states began to publish their common core standards, I took a look at the math portion, and it seemed surprisingly "normal" to me. As for Pearson, I wonder if one company owning both the curriculum and the testing process is a good thing.