Sunday, December 13, 2015

December 13

We started two-digit addition last week (like 36 + 8) and I can see that the work we’ve done on mental addition has helped prepare them.  Our math curriculum uses the phrase “regroup ten ones for one ten” instead of “carry the ten” like you may have been taught.   Today, we stress the understanding of what place value really means (having enough ones to make a new ten) and not just “put a 1 up there and add” like I learned!

Many of their papers will ask them to tell how they used regrouping to solve the problem.  A lot of them missed that question on a paper last Friday, so I thought I’d let you know what would be an acceptable answer. 

For the problem 36 + 8, they should be able to explain that they added 6 ones and 8 ones to equal 14, which is enough to make a new ten, or “regroup”.  There are lots of different ways to say that, but as long as I can see that they know to add the ones to make a new ten, or regroup, then I’ll know that they know what the process is.  Try to use these words with them when you’re looking at their math papers together!  If you want to talk to me more about this, we can do that at the Parent Resource Night this Wednesday.

Dates on Deck
Wednesday, December 16  1:00 dismiss (professional development) & Parent Resource Night 6:30
Tuesday, December 22  Class Christmas Party (treats committe will be bringing home a note this week.  If you want your child to participate in the gift exchange, please send a wrapped book by the 22nd)
Wednesday, December 23  1:00 dismiss (Christmas break)
Monday, January 4  Classes resume

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