One of the challenges of the numerous changes to mathematics curriculum in the state of Georgia throughout this millennium is that textbook companies do not tend to make specific textbook editions for the classes that our high schools are teaching. Thus, we have become accustomed, as teachers and students, to not having textbooks in the classroom.
However, this millennium has also seen an explosion in the amount of resources available to us via the internet (ask an adult to comment on the cutting-edge technology that appeared at the beginning of the Tom Hanks movie, "You Got Mail").
To address this two things, I will try to keep up a semi-decent list of websites with tutoring guides, videos, and extra practice (worksheets, interactive problems, games) that might help students and friends and family members explore the mathematics we are learning in class.
You will have to communicate to me if this is helpful in any way.
PS: I have always liked Purplemath and Khan Academy. Lots of great videos are on You Tube, of course.
Solving Quadratic Equations
http://www.purplemath.com/modules/solvquad.htm
http://www.wikihow.com/Solve-Quadratic-Equations
http://www.regentsprep.org/regents/math/algtrig/ate3/quadcompletesquare.htm
http://www.mathportal.org/calculators/solving-equations/quadratic-equation-solver.php --- Pretty Cool!
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