Thursday, May 17, 2012

Solving Quadratic Equations

First blog... all right!

Did you ever wonder why a 2nd-degree polynomial is called "QUADRATIC"?  Doesn't "quad" mean "4"?

And, are you having trouble memorizing the QUADRATIC FORMULA?

I did a quick intro & song on FotoFlo M (awesome iPhone app) for my students... yes - we do sing it in class.
The tune is "pop goes the weasel"'s the link:

Caution:  If a quadratic equation doesn't contain a 1st-degree term ("x" to the 1st power) then b = 0 in the quadratic formula.