Prealgebra (8th Grade Math) Online Course


This course includes:
18+ hours of video instruction Exams, quizzes, & 1000s of exercises
Downloadable notes & worksheets 12 months unlimited access
Access on mobile Certificate of completion & grade report
Optional course additions (check box to select):
Live office hours/ tutoring support $34.95 a month View details
Companion Book, Volume 1 $49.99 View details
Companion Book, Volume 2 $49.99 View details
Companion Book Answer Key $21.95 View details
Printed quizzes and answer keys $28.49 View details

Thinkwell's Prealgebra with Professor Edward Burger

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Thinkwell's Prealgebra is an online, video-based course designed to give your child the reasoning and computational skills they will need to succeed in high school Algebra.

Our 300+ video lessons by award-winning mathematician and college professor Dr. Edward Burger provide a path for the best foundation for success in Algebra 1. Automatically graded exercises provide the practice your student needs to understand algebra.

Professor Burger's expertise shines through in his approachable teaching style, making complex topics accessible to learners of all levels. (View a Sample Video) Students benefit from a structured, self-paced curriculum designed to build a strong foundation in mathematics. For an advanced sequence, check out our Honors Prealgebra course.

Course Features

Video Lessons

304 Engaging, 5-7 minute lesson videos
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Lesson Plan

Detailed, 36-week lesson plan and schedule
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Automatically graded quizzes and tests
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100+ Course worksheets with answer keys
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What Parents Are Saying. . .
"We have used Thinkwell for two school years now, 7th and 8th Math, as well as Geometry and Algebra 2. It is the favorite math program with both my son and daughter. They enjoy the teacher and his presentations, and feel they are very clear and complete. For us, Thinkwell has been a blessing, and we intend to continue to use it for the rest of our math needs. We have also shared this news with our friends, and several have also been won over to the Thinkwell side!”
– Delana J.
"We've used Thinkwell for 6th and 8th grade math. In the past we have used Saxon, Teaching Textbooks. Out of all the products Thinkwell is our favorite. Our boys really responded to the instructor. They thought he was funny and that he showed them methods and ways of doing things the other programs left out. Their test scores improved dramatically. We felt it was much more comprehensive than Teaching Textbooks even a year ahead and way more engaging than Saxon. We will definitely be using it again next year. As a mom with five kids I really like how it took a load off of me. All around super happy with this product! We have shared with lots of friends.”
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"We love Thinkwell. If we could take all our classes from them, we would. My kids talk about the pre-recorded lectures as "My professor said" and "my professor does" just as though they had real face-to-face contact with the instructor every day. We can't wait for next year. We're already planning to take two math and one science class through Thinkwell next year. I tell everyone about Thinkwell!”
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Course Overview

What You Get

  • 12-month, online subscription to our complete 8th Grade Math (Prealgebra) course
  • 36-week, day-by-day course lesson plan
  • 90+ course lessons with 300+ streaming videos
  • Automatically graded drill-and-practice exercises with step-by-step answer feedback
  • Downloadable, printable course worksheets & answer keys
  • Automatically graded section quizzes
  • Chapter & Practice tests, a Midterm & Final Exam
  • Animated interactivities....and more!

How It Works

  • Purchase Thinkwell's 8th Grade Math (Prealgebra) through our online store
  • Create an account username and password which will give you access to the online 8th-grade Math (Prealgebra) 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, quizzes, tests and more
  • 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
Thinkwell's 8th Grade Math (Prealgebra) Author

Learn from award-winning mathematician Dr. Edward Burger

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

  • "Global Hero in Education" by Microsoft Corporation
  • "America's Best Math Teacher" by Reader's Digest
  • Robert Foster Cherry Award Winner for Great Teaching
  • Author of The 5 Elements of Effective Thinking and Making Up Your Own Mind: Thinking Effectively Through Creative Problem Solving
  • A leader on thinking, innovation, and creativity
Thinkwell's 8th Grade Math (Prealgebra) Table of Contents
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1 Principles of Algebra

1.1 Expressions and Properties of Numbers
1.1.1 Introduction to Exponents
1.1.2 Using the Order of Operations
1.1.3 Variables and Algebraic Expressions
1.1.4 Translate Words into Math
1.1.5 Properties of Numbers
1.2 Operations with Integers
1.2.1 Integers
1.2.2 Adding Integers
1.2.3 Subtracting Integers
1.2.4 Multiplying and Dividing Integers
1.3 Equations and Inequalities
1.3.1 Addition and Subtraction Equations
1.3.2 Multiplication and Division Equations
1.3.3 Introduction to Inequalities

2 Rational Numbers

2.1 Operations with Rational Numbers
2.1.1 Rational Numbers
2.1.2 Comparing and Ordering Rational Numbers
2.1.3 Adding and Subtracting Rational Numbers
2.1.4 Multiplying Rational Numbers
2.1.5 Dividing Rational Numbers
2.2 Equations with Rational Numbers
2.2.1 Solving Equations with Rational Numbers
2.2.2 Solving Two-Step Equations

3 Introduction to Graphs, Functions, and Sequences

3.1 Tables and Graphs
3.1.1 Ordered Pairs
3.1.2 Graphing on a Coordinate Plane
3.1.3 Interpreting Graphs and Tables
3.2 Introduction to Functions and Sequences
3.2.1 Functions
3.2.2 Equations, Tables, and Graphs
3.2.3 Arithmetic Sequences

4 Exponents and Roots

4.1 Properties of Exponents
4.1.1 Product and Power Properties of Exponents
4.1.2 Integer Exponents
4.1.3 Quotient Properties of Exponents
4.1.4 An Application of Exponents: Scientific Notation
4.2 Square Roots and the Pythagorean Theorem
4.2.1 Square Roots and Real Numbers
4.2.2 Operations with Square Roots
4.2.3 The Pythagorean Theorem and the Distance Formula

5 Proportionality and Measurement

5.1 Ratios, Rates, and Proportions
5.1.1 Ratios and Proportions
5.1.2 Ratios, Rates, and Unit Rates
5.1.3 Dimensional Analysis
5.1.4 Solving Proportions
5.2 Similarity, Scale, and Measurement
5.2.1 Similar Figures
5.2.2 Dilations
5.2.3 Indirect Measurement
5.2.4 Scale Drawings and Scale Models

6 Percents

6.1 Proportions and Percents
6.1.1 Relating Decimals, Fractions, and Percents
6.1.2 Estimate with Percents
6.1.3 Finding Percents
6.1.4 Finding a Number When the Percent is Known
6.2 Applying Percents
6.2.1 Percent Increase and Decrease
6.2.2 Applications of Percents
6.2.3 Simple Interest

7 Foundations of Geometry

7.1 Points, Lines, and Angles
7.1.1 Points, Lines, and Planes
7.1.2 Angles and Their Relationships
7.2 Polygons
7.2.1 Triangles
7.2.2 Classifying Polygons
7.2.3 Coordinate Geometry
7.2.4 Congruence
7.3 Patterns in Geometry
7.3.1 Transformations
7.3.2 Symmetry
7.3.3 Tessellations

8 Perimeter, Area, and Volume

8.1 Perimeter and Area
8.1.1 Perimeter and Area of Rectangles and Parallelograms
8.1.2 Perimeter and Area of Triangles and Trapezoids
8.1.3 Circles
8.2 Three-Dimensional Geometry
8.2.1 Drawing Three-Dimensional Figures
8.2.2 Volume of Prisms and Cylinders
8.2.3 Volume of Pyramids and Cones
8.2.4 Surface Area of Prisms and Cylinders
8.2.5 Surface Area of Pyramids and Cones
8.2.6 Spheres
8.2.7 Scaling Three-Dimensional Figures
8.2.8 Converting Units of Measurement

9 Data and Statistics

9.1 Collecting and Describing Data
9.1.1 Samples and Surveys
9.1.2 Identifying Sampling Errors and Bias
9.1.3 Organizing Data
9.1.4 Measures of Central Tendency
9.1.5 Variability and Box-and-Whisker Plots
9.2 Data Displays
9.2.1 Displaying Data
9.2.2 Analyzing Data Displays
9.2.3 Misleading Graphs and Statistics
9.2.4 Scatter Plots
9.2.5 Choosing the Best Representation of Data

10 Probability

10.1 Experimental Probability
10.1.1 Probability
10.1.2 Experimental Probability
10.1.3 Use a Simulation
10.2 Theoretical Probability and Counting
10.2.1 Theoretical Probability
10.2.2 Independent and Dependent Events
10.2.3 Making Decisions and Predictions
10.2.4 Odds
10.2.5 Counting Principles
10.2.6 Permutations and Combinations

11 Multi-Step Equations and Inequalities

11.1 Solving Equations
11.1.1 Simplifying Algebraic Expressions
11.1.2 Solving Multi-Step Equations
11.1.3 Solving Equations with Variables on Both Sides
11.1.4 Solving Literal Equations
11.2 Solving Inequalities and Systems of Equations
11.2.1 Solving Inequalities by Multiplying or Dividing
11.2.2 Solving Multi-Step Inequalities
11.2.3 Systems of Equations
Frequently Asked Questions About Thinkwell's 8th Grade Math (Prealgebra)

How do Thinkwell courses work?

Your student watches a 5-10 minute online video lesson and then completes the automatically graded exercises for the topic, receiving 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 standard table of contents.

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.

What math courses should a student take?

A typical sequence of secondary math courses completed by a college-bound student is: Grade 6 Math > Grade 7 Math > Grade 8 Math > Algebra 1 > Geometry > Algebra 2 > Precalculus. For students looking to include Calculus as part of their high school curriculum and are able to complete Grade 7 Math in 6th grade, the sequence can be: Grade 7 Math > Prealgebra > Algebra 1 > Geometry > Algebra 2 > Precalculus > Calculus.

Is Thinkwell's 8th Grade Math (Prealgebra) appropriate for my accelerated student?

For advanced students, you may be interested in 8th Grade Math Honors.

Does my student get school credit for Thinkwell's 8th Grade Math?

No, only schools are accredited and Thinkwell is not a school, though many accredited schools use Thinkwell.

Does Thinkwell's 8th Grade Math (Prealgebra) meet state standards?

Some states set standards for what topics should be taught in a particular course. Thinkwell does not have a course version for each state. Instead, the course is built to national standards to be inclusive of all states. View the content, standards, and objectives for our 8th Grade Math/Prealgebra course HERE . Websites such as can help you determine your state's standards.

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's 8th Grade Math (Prealgebra)?

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

Can I see my grade?

Thinkwell's course software tracks everything your student does. When logged in, your student can click "My Grades" to see their progress.

How are grades calculated?

The course grade is calculated this way: Quizzes: 40%, Chapter tests: 40%, Midterm: 10%, and Final: 10%.

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?

Most of the exercises are multiple choice and they are graded automatically with correct answer solutions.

Is Thinkwell's Is Thinkwell's Prealgebra spiral or mastery-based?

Thinkwell math courses are mastery-based, ensuring students thoroughly grasp each concept before progressing to the next. While mastery is the primary goal, our courses integrate regular review opportunities strategically throughout the course material. These reviews reinforce previously learned material, solidifying understanding and identifying areas for improvement. By combining mastery-focused instruction with ongoing review, Thinkwell Math equips students with a strong foundation in mathematics, setting them up for long-term success in the subject.

What is Thinkwell's Refund Policy?

We offer a full refund of 12-month subscription purchases within 14 days of purchase, no questions asked. However, refunds are not provided for completed courses. No grade reports, certificates, or transcripts are provided for refunded courses. For Essential Review courses, the refund period is 14 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.

How long does it take for my optional printed course materials to arrive after I've ordered them?

Orders for the optional printed books are processed within 1-3 business days (workdays excluding weekends and federal holidays) and shipped via UPS Mail Innovations® Expedited mail service. Shipping may take 12-14 business days, or longer pending delays. We're unable to send tracking information automatically, but you may request a tracking number after the order has been processed (1-3 business days).

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. Learn more about our accreditation HERE.

Is Thinkwell math conceptual or procedural?

Thinkwell’s approach to teaching and learning mathematics blends conceptual understanding with procedural fluency. Overall, we aim to strike a balance between concepts and procedures in our content which allows students to develop the skills and knowledge needed for success in mathematics. We recognize the importance of building a strong conceptual foundation when learning math. Prof. Burger emphasizes the "why" behind mathematical principles in the video lectures so that our students can develop a comprehensive understanding of the ideas underpinning the subject. We also believe in the benefits of procedural fluency, recognizing that mathematical proficiency requires not only understanding but also the ability to apply procedures accurately and efficiently. Through systematic practice, students master various mathematical techniques, ensuring they can solve problems confidently and accurately.

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