Guest post by Karen Schweitzer

Need to brush up on your math skills or prepare materials for a new math class. There are many different colleges and universities that offer free online math courses at the undergraduate and graduate level. Here are ten courses that would be useful to teachers.

Numbers, Units, and Arithmetic – This introductory math course from the UK’s Open University offers a basic review of whole numbers, decimals and fractions. The course is split into three self-study modules and takes approximately five hours to complete.

Algebra I – This undergraduate level Algebra I course from the Massachusetts Institute of Technology covers a wide range of topics, including groups, vector spaces, linear transformations, and bilinear forms. Course materials include lectures, quizzes, assignments, and more.

College Algebra – Utah State University’s free college algebra course teaches students about number systems, graphs, functions, theorems, permutations and combinations. Course materials include readings, assignments, and quizzes.

CSET Mathematics I: Algebra – The University of California – Irvine has an excellent online course designed to help prepare math teachers for the California Subject Examinations for Teachers (CSET). The course includes six lessons and covers a wide range of topics.

Geometry I – This free math course from the Mathematical Institute of the University of Oxford provides a thorough introduction to geometry. The online course includes lecture materials, handouts, and question sheets.

Algebraic Geometry – The Massachusetts Institute of Technology’s free graduate level algebraic geometry course includes lectures, problems sets, and an exam.

Calculus I – Dixie State College of Utah offers two free online calculus courses. This course covers a wide range of topics, including limits, infinity, tangents, derivatives, anti-derivatives, and integrals.

Multivariable Calculus – This free UC Berkeley course offers a comprehensive review of multivariable calculus. The course is delivered through a series of pre-recorded audio and video lectures.

Trigonometry I – This offering from Whatcom College is more of a unit than a course, but it does provide an excellent introduction to trigonometry. The unit is presented through a 20-page PDF and includes text and illustrations.

Computational Discrete Mathematics – Carnegie Mellon is currently developing this free online course, but units are available while the course is in development. The course emphasizes practical algorithms and experiential learning and includes self-guiding materials and activities.

Guest post from Karen Schweitzer, the About.com Guide to Business School. Karen also writes about online colleges and universities for OnlineColleges.net.

At the CoolMathGuy.com, the source for online math courses. Here you can find a wealth of math resources including math games, math worksheets, math problems, and math help in the following online math courses:

* Arithmetic

* Prealgebra

* Algebra I

* Geometry

* Algebra II

* ACT / SAT Math Review

* Statistics

* College Algebra

* Trigonometry

* Precalculus

* Calculus I

* Calculus II

* Calculus III

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