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At what grade or at what math level, should calculators be introduced into the classroom or lesson? Or should I never bring them into the classroom?
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei