Perhaps you have seen the Facebook post by an angry mother who is upset about her daughter’s Common Core-based math problem. There’s a larger lesson here, but it’s not about the Common Core.
Click here for the Facebook post by Larisa Yaghoobov Settembro
Carole read 28 pages of a book on Monday and 103 pages on Tuesday. Is 75 pages a reasonable answer for how many more pages Carole read on Tuesday than Monday?
Yes, 75 is a reasonable answer because 103-28 = 75
-1 [pt] Estimate 100-30 = 70
Right math lesson, wrong question
Other blog and news sites have taken this on, for and against the question. I think this is a horrible question, but not because the exercise of rounding is worthless. It’s a poor assessment question because, Continue reading