Here is my parabola worksheet that helps students see the relationship between the variables in a quadratic equation and how the parabola moves and/or flips. This worksheet is used with geogebra.org but can be used with a graphing calculator as well.
I have also included an answer key with this product. Please note that some of the questions do not have full answers. This is due to the fact that there are predictions that are needed to to be made by the students.