If you consider the fact that technology is designed to solve problems for us, it should only be introduced after students have mastered the ability to solve problems on their own. Otherwise, technology works to mask their lack of understanding. For example, if you were to give a student a calculator moments after teaching her multiplication and division, chances are she would stop working through the problems on her own and start depending on the calculator to do the work for her. The calculator would become more of a crutch because her own multiplication and division abilities would never
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