Thinkwell’s Prealgebra with Edward Burger lays the foundation for success because, unlike a traditional textbook, students actually like using it. Thinkwell works with the learning styles of students who have found that traditional textbooks are not effective. Watch one Thinkwell video lecture and you’ll understand why Thinkwell works better.

Comprehensive Video Tutorials
We’ve built Prealgebra around hundreds of multimedia tutorials that provide dozens of hours of instructional material. Thinkwell offers a more engaging, more effective way for you to learn.

Instead of reading dense chunks of text from a printed book, you can watch video lectures filled with illustrations, examples, and even humor. Students report learning more easily with Thinkwell than with traditional textbooks.

Interactive Exercises with Feedback
There are hundreds of exercise items with fully worked-out solutions and explanations. Each video topic has corresponding exercises to test your understanding.

Test your understanding with hundreds of exercises that are automatically graded. Your results are available immediately, including fully worked-out solutions and explanations for each exercise. You can work on the exercises at the computer or print them out to work on later. Access your cumulative results anytime.

Review Notes and More
While the video lectures are the heart of Thinkwell products, we also offer concise, illustrated review notes, a glossary, transcripts of the video lectures, and links to relevant websites. All of these materials may be viewed online, and the notes and transcripts may be printed and kept for reference.

Whole Numbers



1.1 Introduction to Whole Numbers

1.1.1 Reading and Writing Whole Numbers

1.1.2 Rounding Whole Numbers




1.2 Operations with Whole Numbers

1.2.1 Adding Whole Numbers

1.2.2 Subtracting Whole Numbers

1.2.3 Multiplying Whole Numbers

1.2.4 Dividing Whole Numbers

1.2.5 Properties

Integers



2.1 Introduction to Integers

2.1.1 Integers and the Number Line




2.2 Operations with Integers

2.2.1 Addition of Integers

2.2.2 Subtraction of Integers

2.2.3 Multiplication and Division of Integers

2.2.4 Introduction to Exponents

2.2.5 Using the Order of Operations

Fractions



3.1 Introduction to Fractions

3.1.1 Factors, Multiples, and Equivalent Fractions




3.2 Operations with Fractions

3.2.1 Multiplying Fractions and Mixed Numbers

3.2.2 Dividing Fractions and Mixed Numbers

3.2.3 Adding and Subtracting Fractions and Mixed Numbers

Decimals



4.1 Introduction to Decimals

4.1.1 Representing, Comparing, and Ordering Decimals

4.1.2 Rounding and Estimating Decimals




4.2 Operations with Decimals

4.2.1 Adding and Subtracting Decimals

4.2.2 Multiplying Decimals

4.2.3 Dividing Decimals




4.3 Fractions and Decimals

4.3.1 Converting between Fractions and Decimals

Variables, Expressions, and Equations



5.1 Introduction to Equations

5.1.1 Variables and Expressions

5.1.2 Translating Between Words and Math

5.1.3 Simplifying Algebraic Expressions

5.1.4 Translating Between Tables and Expressions

5.1.5 Equations and Their Solutions




5.2 Introduction to Solving Equations

5.2.1 Solving Addition Equations

5.2.2 Solving Subtraction Equations

5.2.3 Solving Multiplication Equations

5.2.4 Solving Division Equations

Solving Equations and Inequalities



6.1 Solving Equations

6.1.1 Solving Equations Containing Integers

6.1.2 Writing and Solving Two-Step Equations

6.1.3 Writing and Solving Multi-Step Equations

6.1.4 Solving Equations with Variables on Both Sides




6.2 Solving Inequalities

6.2.1 Inequalities

6.2.2 Solving Inequalities by Adding or Subtracting

6.2.3 Solving Inequalities by Multiplying or Dividing

6.2.4 Solving Two-Step Inequalities

Ratios, Proportions, and Percents



7.1 Ratios and Proportions

7.1.1 Ratios and Rates

7.1.2 Proportions

7.1.3 Finding an Unknown Value in a Proportion

7.1.4 Applications of Proportions




7.2 Percents

7.2.1 Introduction to Percents

7.2.2 Percents

7.2.3 Relating Percents, Decimals, and Fractions

7.2.4 Estimating with Percents

7.2.5 Finding and Using Percents




7.3 Interest

7.3.1 Simple Interest

7.3.2 Compound Interest

Measurement, Statistics, and Graphs



8.1 Measurement

8.1.1 Understanding Customary Units of Measurement

8.1.2 Understanding Metric Units of Measurement

8.1.3 Converting Customary Units

8.1.4 Converting Metric Units

8.1.5 Converting between Customary and Metric Units

8.1.6 Time and Temperature




8.2 Organizing, Displaying, and Interpreting Data

8.2.1 Organizing Data

8.2.2 Bar Graphs and Histograms

8.2.3 Line Graphs

8.2.4 Reading and Interpreting Circle Graphs

8.2.5 Measures of Central Tendency

8.2.6 Box-and-Whisker Plots




8.3 Graphing Equations and Slope

8.3.1 The Coordinate Plane

8.3.2 Tables and Graphs

8.3.3 Graphing Linear Equations

8.3.4 Graphing Using Intercepts

8.3.5 An Introduction to Slope

8.3.6 Finding the Slope Given Two Points

Geometry



9.1 Polygons

9.1.1 Triangles

9.1.2 Quadrilaterals

9.1.3 Finding Angles in Polygons




9.2 Polygon Relationships

9.2.1 Similar Figures

9.2.2 Congruent Figures




9.3 Area, Perimeter, and Circumference

9.3.1 Perimeter

9.3.2 Area of Rectangles and Parallelograms

9.3.3 Area of Triangles and Trapezoids

9.3.4 Circles and Circumference

9.3.5 Area of Circles

9.3.6 Area of Composite Figures

9.3.7 Comparing Perimeter and Area




9.4 The Pythagorean Theorem

9.4.1 Square Roots and the Pythagorean Theorem




9.5 Solids

9.5.1 Introduction to Three-Dimensional Figures

9.5.2 Volume of Prisms and Cylinders

9.5.3 Volume of Pyramids and Cones

9.5.4 Surface Area of Prisms and Cylinders

9.5.5 Surface Area of Pyramids and Cones

9.5.6 Volume and Surface Area of Spheres

Exponents and Polynomials



10.1 Exponents

10.1.1 Product and Power Properties of Exponents

10.1.2 Integer Exponents

10.1.3 Quotient Properties of Exponents

10.1.4 An Application of Exponents: Scientific Notation




10.2 Introduction to Polynomials

10.2.1 Introduction to Polynomials

10.2.2 Simplifying Polynomials




10.3 Operations with Polynomials

10.3.1 Adding and Subtracting Polynomials

10.3.2 Multiplying and Dividing Monomials

10.3.3 Multiplying Monomials by Polynomials

10.3.4 Multiplying Binomials




10.4 Factoring Polynomials

10.4.1 Factoring with the GCF

10.4.2 Factoring by Grouping

10.4.3 Factoring Trinomials

Probability



11.1 Understanding Probability

11.1.1 Introduction to Probability

11.1.2 Experimental Probability

11.1.3 Counting Methods and Sample Spaces

11.1.4 Theoretical Probability




11.2 Using Probability

11.2.1 Compound Events

11.2.2 Making Predictions

11.2.3 Probability of Independent and Dependent Events

11.2.4 Permutations and Combinations

Edward Burger
Williams College

Edward Burger, Professor of Mathematics at Williams College, earned his Ph.D. at the University of Texas at Austin, having graduated summa cum laude with distinction in mathematics from Connecticut College.

He has also taught at UT-Austin and the University of Colorado at Boulder, and he served as a fellow at the University of Waterloo in Canada and at Macquarie University in Australia. Prof. Burger has won many awards, including the 2001 Haimo Award for Distinguished Teaching of Mathematics, the 2004 Chauvenet Prize, and the 2006 Lester R. Ford Award, all from the Mathematical Association of America. In 2006, Reader's Digest named him in the "100 Best of America".

Prof. Burger is the author of over 50 articles, videos, and books, including the trade book, Coincidences, Chaos, and All That Math Jazz: Making Light of Weighty Ideas and of the textbook The Heart of Mathematics: An Invitation to Effective Thinking. He also speaks frequently to professional and public audiences, referees professional journals, and publishes articles in leading math journals, including The Journal of Number Theory and American Mathematical Monthly. His areas of specialty include number theory, Diophantine approximation, p-adic analysis, the geometry of numbers, and the theory of continued fractions.

Prof. Burger's unique sense of humor and his teaching expertise combine to make him the ideal presenter of Thinkwell's entertaining and informative video lectures.