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Interactive
Curated OER

Factoring Quadratic Polynomials

For Students 9th - 12th
In this online math worksheet, students practice factoring 10 quadratic polynomials. When complete, students submit their answers and get instant feedback regarding their accuracy.
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Activity
Math Medics

S.o.s. Math: Algebra

For Students 9th - 10th Standards
This lesson provides basic instruction on the major concepts in algebra. Content includes a focus on fractions, units of conversion, complex numbers, quadratic equations, factorization and roots of polynomials, solving equations, systems...
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Handout
Cut the Knot

Cut the Knot!: Fundamental Theorem of Algebra

For Students 9th - 10th Standards
Contains detailed historical information regarding the Fundamental Theorem of Algebra and the various proofs that were developed. Click on the links at the bottom of the page to access all the information.
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Handout
Math Medics

S.o.s. Math: Fundamental Theorem of Algebra

For Students 9th - 10th Standards
This lesson takes a look at the Fundamental Theorem of Algebra. It gives information on solving multiplicity of roots and quadratic polynomials. Also gives a brief history and provides some learning exercises to practice.
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Handout
Math Medics

S.o.s. Math: Quadratic Formula: Completing the Square

For Students 9th - 10th Standards
This tutorial explains the quadratic formula by reviewing its origin from the process of completing the square. Includes examples and a few exercises.
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Handout
University of St. Andrews (UK)

University of St. Andrews: The Fundamental Theorem of Algebra

For Students 9th - 10th Standards
Contains a brief historical description of how the Fundamental Theorem of Algebra evolved.
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Unit Plan
CK-12 Foundation

Ck 12: Fundamental Theorem of Algebra

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Know the Fundamental Theorem of Algebra; show that it is true for quadratic polynomials.
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Unit Plan
CK-12 Foundation

Ck 12: Find Imaginary Solutions

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] In this lesson, students are finding complex roots of polynomials and applications of the Fundamental Theorem of Algebra. Students examine guided notes, review...
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Unit Plan
CK-12 Foundation

Ck 12: Algebra: Factorization of Quadratic Expressions

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Factor quadratic polynomial expressions of the form ax^2 + bx + c.
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Activity
Math Medics

S.o.s. Math: Method of Partial Fractions

For Students 9th - 10th
This lesson teaches how to dissect complicated fractions into the sum of simple fractions.