Last week I gave a unit math test to my students. They all pretty much did very poorly. I found it necessary to review addition, subtraction, and multiplication of decimal numbers. Each day this week, I've given them pages full of problems to solve. Well, as happens, the paperwork stacked up without getting corrected.
So today I handed back the three pages of problems. I told them to take out their calculators and correct their own work. If they got a problem wrong, I told them, they were to rework the problem and figure out what their mistake was.
It was amazing how many kids thought that it was their calculator that got it wrong...
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