Illustrative Mathematics
Illustrative Mathematics: F Bf, a Sse Building a General Quadratic Function
This task is a followup to the one called 'Building an explicit quadratic function.' For this one, students follow the same process with a general quadratic function. The operations take place in the opposite order and the goal is to...
Lawrence Hall of Science
The Math Page: Topics in Pre Calculus: Completing the Square
Here is a site that clearly and thoroughly explains how to solve quadratic equations by completing the square. The quadratic formula is derived using this method on this page. Point this site out to students who have been absent or who...
Other
Center for Technology and Teacher Education: Parabola Lesson Plan
This site is a lesson plan on construction of a parabola using the definition. Geometer's Sketch Pad software is beneficial for the lesson plan. Through the lesson plan students develop gemetric constructions of parabolas, use the...