(From November 2010)
While tutoring math students in the North Shore, I've observed the 
"blessing and curse of the calculator". As they do problems in Algebra, 
Trigonometry, Calculus, and other courses, kids often refer to their 
calculator. There are pros and cons. Why?
When I was a young math student (a long, long, time ago!), a calculator 
was a novelty. A luxury. A nice graduation gift. A helpful device. But, 
it couldn't be relied upon. Why? Many weren't sophisticated enough for 
certain problems. (Plus, in many cases, teachers would not permit 
them.)  
Today, even simple calculators are incredibly powerful. Last week, a 
calculus student in Highland Park quickly input the coefficients of 3 
quadratic equations. Presto, he had the solution. I watched a 
trigonometry student quickly solve area problems and utilize law of 
cosines with the help of her calculator.. At the same time, while 
working with a 6th grader in Glencoe, I cringed as the kid reached for 
the calculator to solve a division problem!  (Could he not try long 
division by hand?). He came up with the right number---but, wrong 
decimal point. (He had pushed the wrong button!)....  
Today, calculators are quite affordable. (And, teachers allow students 
to use them.).  Nevertheless, while a calculator is incredibly useful to
 perform complex tasks, kids should consider the old school 
method---pencil and paper----to solve simple equations.  They need the 
practice!

 
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