Update on Partial Sums Addition
After teaching the partial sums addition algorithm last week, students were told to use it as a requirement of our math curriculum series. They will be seeing it again in 3rd grade when they learn how to do 2 and 3 digit multiplication.
HOWEVER…
Yesterday in class I taught the students the traditional way of doing addition where they carry the tens or hundreds numbers to the top. They are allowed to choose either way do to their assignments, unless it specifically asks for the partial sums algorithm. We discussed this quite a bit yesterday before sending home their homework.
To “show work” the carrying way, they need to keep their marks above columns rather than erasing them. (For some reason, 2nd graders like to erase their work in math )
I know that this is a frustrating concept for students and parents alike, but please be patient with the process. It does have some merit in helping students pull apart place value.
Thank you!
Mrs. Eshbaugh
Wednesday, December 2, 2009
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