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Montgomery County Public Schools (MCPS)
Reply to "Why are MoCo kids failing math exams?"
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[quote=Anonymous]I just remembered part 2 of the story. X-100=120. What is X? This is math magic: Hey kids, if you see an X at the beginning with a minus after it, just add the numbers you see and you will magically find out what X is. X+117=145: Hey kids, if you see a plus just take the bigger number from wherever you see it in the equation and subtract the smaller number. You will magically find out what X is. This is math: Hey kids, did you know that if you add the same amount to both sides of the equation, you aren't changing the equivalency? Same with subtracting. If we want to find out what X is, we need to do something to that side of the equation so that we get X by itself...hmm...I wonder what we could do...etc. etc. No magic. Just math. These magic math lessons completely confused my child's excellent number sense. [/quote]
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