Above is a photo of some of my lecture notes on the quadratic formula. In the lower right hand corner, you see the students have found the differences between linear and quadratic functions.
Below is a link to algebra.com's web site. They have a quadratic equation solver that even comes with a graph of the solution. Unfortunately, the students will not have this web site to use when they do the unit assessment. They are all required to blog about quadratic equations on their student blogs.
Algebra.com's Quadratic Equation Solver
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