Precalculus CLEP® Prep Online


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Precalculus CLEP®* Prep

Award-winning professor Edward Burger teaches the fundamentals of Precalculus in a series of dynamic, comprehensive video lessons. You'll learn the concepts of Precalculus that you will need to be successful on the Precalculus CLEP test. Included in the course are two full-length, sample CLEP tests with answers and step-by-step feedback. This course is self-paced with an option to fast-track through the course content by using our diagnostic, personalized study-path Guide tools.

Over 2,900 colleges and universities award course credit for CLEP (College Level Examination Program) qualified exam results.  The Precalculus CLEP exam is a 90-minute exam with 48 questions.  For more information on CLEP, see the College Board site.

*(CLEP® is a registered trademark of the College Board, which was not involved in the production of this product. This course is designed for self-study preparation for the CLEP® exam and has not been audited by the College Board.)

Course Features

Video Lessons

100+ engaging 5-10 minute video lessons
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Notes & Sample Problems

Illustrated course notes & sample problems
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Practice CLEP Tests

Two full-length practice CLEP tests
View Sample Test

Certificate of Completion

Certificate of Completion
View Sample
What Parents Are Saying. . .
"My eldest daughter, now a college freshman, used Thinkwell's Precalculus and AP Calculus. With the help of Professor Ed Burger, she scored a perfect 5 on her AP exam and received full college credit! Ed Burger is humorous and organized. The course is very comprehensive."
– Barbara H
“We ordered a subscription of the Calculus for my son who was to retake the AP Calculus B/C exam after scoring a 3 the first time around. He watched the videos at his leisure, focusing on content that he needed to review. He ended up with a 5 on the AP exam thanks to Thinkwell. We highly recommend them!”
– Rebecca O
“Thinkwell Math is the best product out there for students headed into a math or science field in college. My son used Thinkwell Calculus, took the AP Calculus BC test, and scored a 5, allowing him to go directly into Calculus III in college. He loved Dr. Burger and learned so much from the course! My other children will be using it as well.”
– Linda
”We have used Thinkwell Math for YEARS for the upper level maths and now use it from 6th grade to Calculus BC. Prof. Burger is hilarious and able to clearly teach concepts from the very simple to the absurdly complex. He adds little songs, funny demonstrations, and all kinds of interesting examples to make math fun. My kids who have taken the AP math tests have scored 5's, and Thinkwell has been excellent at preparing them for the tests. We are die-hard Thinkwell Math fans and have been happy to tell anyone looking for a math program to look no further!”
– Diane S.
Course Overview

What you get

  • 12-month, online subscription to our complete Precalculus CLEP
  • 100+ course lessons, each with a streaming video
  • Illustrated notes
  • Automatically graded drill-and-practice exercises with step-by-step answer feedback
  • Sample problems with solutions
  • Chapter & Practice tests
  • Two complete practice CLEP tests

How it works

  • Purchase Thinkwell's Precalculus CLEP course through our online store
  • Create an account username and password which will give you access to the online Precalculus CLEP course section
  • Activate your 12-month subscription when you're ready
  • Login to the course website to access the online course materials, including streaming video lessons, exercises, tests and more
  • Take a brief diagnostic that creates a fast-track plan for topics needing more study
  • Access your course anytime, anywhere, from any device
  • Your work is automatically tracked and updated in real-time
  • Grade reports and certificates of completion are available at request
  • View the course Getting Started Guide here.
Thinkwell's Precalculus CLEP® Prep Author, Edward Burger

Learn from award-winning mathematician Dr. Edward Burger

It's like having a world-class college professor right by your side teaching you Calculus.

  • "Global Hero in Education" by Microsoft Corporation
  • "America's Best Math Teacher" by Reader's Digest
  • Robert Foster Cherry Award Winner for Great Teaching
Thinkwell's Precalculus CLEP® Prep Table of Contents
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Simplifying Radical Expressions
Simplifying Radical Expressions with Variables
Adding, Subtracting, and Multiplying Polynomials
Multiplying Big Products
Using Special Products
Factoring Trinomials Completely
Factoring Trinomials: The Grouping Method
Factoring the Sums and Differences of Cubes
Factoring by Any Method
Multiplying and Dividing Rational Expressions
Adding and Subtracting Rational Expressions

Linear, Rational, and Quadratic Equations

An Introduction to Solving Equations
Solving a Linear Equation
Solving a Linear Equation with Rationals
Solving a Linear Equation That Has Restrictions
An Introduction to Solving Word Problems
Solving for Perimeter
Solving a Linear Geometry Problem
Solving for Consecutive Numbers
Solving to Find the Average
Solving Quadratics by Factoring
Solving Quadratics by Completing the Square
Using the Quadratic Formula
Solving for a Squared Variable
Solving Fancy Quadratics

Absolute Value and Polynomial Equations

Determining Extraneous Roots
Solving an Equation Containing a Radical
Solving an Equation with Two Radicals
Solving an Equation with Rational Exponents
Solving Absolute Value Equations
Solving Equations with Two Absolute Value Expressions
Factoring a Polynomial Given a Zero
Finding Polynomials Given Zeros, Degree, and One Point
Finding all Zeros and Multiplicities of a Polynomial
Finding the Real Zeros for a Polynomial
Finding the Zeros of a Polynomial from Start to Finish

Radical, Exponential, Logarithmic, and Trigonometric Equations

Using Properties of Exponents to Solve Exponential Equations
Finding Present Value and Future Value
Finding an Interest Rate to Match Given Goals
Applying Exponential Functions
Solving for x in Logarithmic Equations
Solving Exponential Equations
Solving Logarithmic Equations
Solving an Equation Involving an Inverse Trigonometric Function
Solving Trigonometric Equations
Solving Trigonometric Equations by Factoring
Solving Trigonometric Equations with Coefficients in the Argument
Solving Trigonometric Equations Using the Quadratic Formula
Solving Word Problems Involving Trigonometric Equations


An Introduction to Solving Inequalities
Solving Word Problems Involving Inequalities
Solving Quadratic Inequalities
Solving Quadratic Inequalities: Another Example
Solving Rational Inequalities
Solving Rational Inequalities: Another Example
Determining the Domains of Expressions with Radicals
Solving Absolute Value Inequalities
Solving Absolute Value Inequalities: More Examples

Systems of Equations

An Introduction to Linear Systems
Solving a System by Substitution
Solving a System by Elimination
Solving Nonlinear Systems Using Elimination
Solving Nonlinear Systems by Substitution

Function Concepts and Properties

Functions and the Vertical Line Test
Identifying Functions
Function Notation and Finding Function Values
Evaluating Piecewise-Defined Functions for Given Values
Finding the Domain and Range of a Function
Domain and Range: One Explicit Example
Satisfying the Domain of a Function

Function Operations and Inverse Functions

Using Operations on Functions
Composite Functions
Components of Composite Functions
Finding Functions That Form a Given Composite
Are Two Functions Inverses of Each Other?
Finding the Inverse of a Function
Finding the Inverse of a Function with Higher Powers

Graphing Functions

Graphing Some Important Functions
Graphing Piecewise-Defined Functions
Matching Equations with Their Graphs
Shifting Curves along Axes
Shifting or Translating Curves along Axes
Stretching a Graph
Reflecting Specific Functions

Polynomial, Rational, and Inverse Functions

Matching Graphs to Polynomial Functions
Sketching the Graphs of Basic Polynomial Functions
Graphing Polynomial Functions: Another Example
Understanding Rational Functions
Basic Rational Functions
Graphing Rational Functions
Graphing Rational Functions: More Examples
Understanding Inverse Functions
The Horizontal Line Test

Exponential, Logarithmic, and Trigonometric Functions

An Introduction to Exponential Functions
Graphing Exponential Functions: Useful Patterns
Graphing Exponential Functions: More Examples
An Introduction to Logarithmic Functions
An Introduction to the Trigonometric Functions
An Introduction to the Graphs of Sine and Cosine Functions
Identifying a Trigonometric Function from its Graph
An Introduction to Inverse Trigonometric Functions

Distance, Circles, and Lines

Finding the Distance between Two Points
Finding the Second Endpoint of a Segment
Finding the Center-Radius Form of the Equation of a Circle
Decoding the Circle Formula
Finding the Center and Radius of a Circle
Solving Word Problems Involving Circles
Graphing Equations by Locating Points
Finding the x- and y-Intercepts of an Equation
Finding the Slope of a Line Given Two Points
Interpreting Slope from a Graph
Graphing a Line Using Point and Slope
Writing an Equation in Slope-Intercept Form
Writing an Equation Given Two Points
Writing an Equation in Point-Slope Form
Matching a Slope-Intercept Equation with Its Graph
Slope for Parallel and Perpendicular Lines


Deconstructing the Graph of a Quadratic Function
Nice-Looking Parabolas
Using Discriminants to Graph Parabolas
Graphing Parabolas
Graphing Quadratics Using Patterns
An Introduction to Parabolas
Determining Information about a Parabola from Its Equation
Writing an Equation for a Parabola
An Introduction to Ellipses
Finding the Equation for an Ellipse
Applying Ellipses: Satellites
An Introduction to Hyperbolas
Finding the Equation for a Hyperbola
Applying Hyperbolas: Navigation
Identifying a Conic
Name That Conic

Trigonometry and Its Applications

Evaluating Trigonometric Functions for an Angle in a Right Triangle
Finding an Angle Given the Value of a Trigonometric Function
Using Trigonometric Functions to Find Unknown Sides of Right Triangles
Finding the Height of a Building
Evaluating Trigonometric Functions for an Angle in the Coordinate Plane
Evaluating Trigonometric Functions Using the Reference Angle
Finding the Value of Trigonometric Functions Given Information about the Values of Other Trigonometric Functions
Trigonometric Functions of Important Angles
Solving Word Problems Involving Sine or Cosine Functions
Evaluating Inverse Trigonometric Functions
Evaluating the Composition of a Trigonometric Function and Its Inverse
Applying Trigonometric Functions: Is He Speeding?
Fundamental Trigonometric Identities
Using Sum and Difference Identities
Using Sum and Difference Identities to Simplify an Expression
Solving Word Problems Involving Multiple-Angle Identities
The Law of Sines: An Application
The Law of Cosines (SSS)
The Law of Cosines (SAS): An Application

Functions as Models

Solving for Constant Velocity
Solving a Problem about Work
Solving a Mixture Problem
Solving an Investment Problem
Solving Business Problems
An Introduction to Word Problems with Quadratics
Solving a Quadratic Geometry Problem
Solving with the Pythagorean Theorem
The Pythagorean Theorem: Another Example
Solving a Motion Problem
Solving a Projectile Problem
Solving Other Problems
Solving Word Problems Involving Functions
Constructing Linear Function Models of Data
Linear Cost and Revenue Functions
Maximum Height in the Real World
Compound Interest
Predicting Change
An Introduction to Exponential Growth and Decay
Newton's Law of Cooling
Continuously Compounded Interest

CLEP Practice

CLEP Practice Exam 1
CLEP Practice Exam 2
Frequently Asked Questions for Thinkwell's Prealculus CLEP® Prep

How do Thinkwell courses work?

Your student watches a 5-10 minute online video lesson, completes the automatically graded exercises for the topic with instant correct-answer feedback, then moves on to the next lesson! The courses are self-paced, or you can use the daily lesson plans. Just like a textbook, you can choose where to start and end, or follow the entire course.

When does my 12-month online subscription start?

It starts when you're ready. You can have instant access to your online subscription when you purchase online, or you can purchase now and start later.

Is Thinkwell Precalculus CLEP Prep certified by the College Board®?

The College Board® doesn't certify textbooks or learning materials for CLEP exams. Their website suggests consulting college calculus textbooks for preparation. Thinkwell's Calculus by Dr. Burger has been in use at colleges for years.

Does my student get school credit for Thinkwell Precalculus CLEP Prep®?

No, this course is specifically to prepare for the CLEP exam.

What’s the difference between the Thinkwell Precalculus course and the Precalculus CLEP Prep® version?

Thinkwell's Precalculus CLEP Prep® covers only the material required for the CLEP exam.

What if my student needs access to the course for more than 12 months?

You can extend your subscription for $19.95/month.

Can I share access with more than one student?

The courses are designed and licensed to accommodate one student per username and password; additional students need to purchase online access. This allows parents to keep track of each student's progress and grades.

How long does it take to complete Thinkwell Precalculus CLEP Prep®?

The pace of your course is up to you, but most students will schedule one semester.

Can I see my grade?

Thinkwell courses track everything your student does. When logged in, your student can click "My Grades" to see their progress.

How are grades calculated?

Because the course is specifically to prepare for the Precalculus CLEP exam, a final grade is not calculated. Results for all assessments are tracked, however.

What is acceptable performance on the exams?

As a homeschool parent, you decide the level of performance you want your student to achieve; the course does not limit access to topics based on performance on prior topics.

Can I get a transcript?

Yes, there's a final grade report print option in the My Grades section. Contact with any questions.

What if I change my mind and want to do a different math course, can I change?

If you discover that you should be in a different course, contact within one week of purchase and we will move you to the appropriate course.

Can I print the exercises?

Yes, but completing the exercises online provides immediate correct answer feedback and automatic scoring, so we recommend answering the exercises online.

Are exercises multiple choice?

The exercises are multiple choice and they are graded automatically with correct answer solutions.

What is Thinkwell's Refund Policy?

We offer a full refund of 12-month subscription purchases within 14 days of purchase, no questions asked. For Essential Review courses, the refund period is 3 days. Optional printed materials are printed on demand and the sales are final.

How does my school review this course?

Should your school need to review a Thinkwell course for any reason, have the school contact and we can provide them access to a demo site.

Do I get credits for a Thinkwell course?

Generally, only schools can award credits, and Thinkwell is not a school. We can provide you with a certificate of completion and a grade report. However, if you’re pursuing credit with a particular school or institution, it might be helpful to know that Thinkwell math courses are accredited by the Western Association of Schools and Colleges (WASC) as a Supplementary Education Program. For California students, Thinkwell is also an approved A-G online publisher.

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