Appropriate Use of Calculators and Multiplication Charts

Students should only be permitted use of calculators when they can manually and demonstrably solve the manner of problems for which they’d seek to use them, and/or to check derived answers. Otherwise, the students utilizing them would not be learning, and would fail any formal examination on which they would not be allowed use of calculators.

All students should be distributed and required to memorize multiplication charts; they should not be allowed to utilize them in class, however, unless they are knowledgeable of how to independently derive products from factors.

A Radical Equation

I saw this problem on the board of one of the classrooms of a high school where I substituted, and thought, “Wow”!!! It’s been a long time since I’ve been in an Algebra class. But looking into the problem and recalling some old mathematical principles that I learned way back when it dawned on me how simple this seemingly complicated problem really is. Click here to view the problem and explanation  http://www.slideshare.net/ymartin3/a-radical-equation