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# Solving Quadratic Equations and Finding the Discriminant

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• 2 Posters relating to the Discriminant
I designed this set of Task Cards to help students understand the purpose and importance of calculating the discriminant prior to solving a quadratic equation. I could not find anything in the text book that demonstrated the power of using the discriminant and found students only really used it when specifically asked to calculate the discriminant and attached no purpose to it. If they were not sure of its importance they would not think to use it later when solving a variety of types of quadratic equations by various methods. With the use of the discriminant students will not be wasting any time attempting to factor those quadratic equations that are not factorable. It helps them compare the use of solving quadratics by factoring versus solving by the use of the quadratic formula. Although any quadratic equation can be solved by using the quadratic formula it is still important to be skilled in solving quadratics by use of factoring and I always felt my students needed more practice solving by factoring.
I have included a Direction Sheet to model how students should solve these problems.
Note: This set includes 3 problems where the discriminant is negative. I have written the answer as no real solution and also provided the imaginary answers. If your students have not covered imaginary numbers just use the “no real solution” as the answer for these problems and do not have them solve it.
They print nicely in color or in gray scale.
Total Pages
18 pages
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