Well, the new year has come, and it’s time to start gathering up receipts and thinking about tax forms.
Would you like to know that our tax dollars are doing good in the world? The National Science Foundation has spent many millions developing and promoting “reform” math textbooks, with encouragement from the U.S. Department of Education. Surely our public schools will now rise out of the doldrums and surge ahead in mathematical achievement, right?
Try for yourself this problem from one of the more famous/infamous of the reform math textbooks:
Can you find the slope and y-intercept of this equation?
10 = x – 2.5
And then check out
this editorial[editorial has disappeared] at edspresso.com. You’ll be amazed at the answer!
Update: Checking on back-links, I discovered that this page had gone AWOL, so I’ll give you the “answer” from the teacher’s manual. The “slope” is 1 and the “y-intercept” is -2.5, according to Connected Math. Unfortunately, this equation actually describes a vertical line (undefined slope) at x=12.5 (never touches the y-axis).
Doesn’t bode well for “CMP helps students and teachers develop understanding of important mathematical concepts…”
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