Math Courses
Find all the courses, study guides and tutoring resources you'll need to pass your math class or prepare for an exam. Our collection of selfpaced video lessons can help you master topics ranging from algebraic expressions and linear equations to trigonometric identities and derivatives. Read more
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Supplemental Materials
Lesson Categories
Math
 Counterexample in Math: Definition & Examples
 Mathematician Al Khwarizmi: Facts & Contributions
 Open Sentence in Math: Definition & Example
 What is a Straight Angle?  Definition & Example
 Angle Addition Postulate: Definition & Examples
 Calculating Average Speed: Formula & Practice Problems
 Bimodal Distribution: Definition, Example & Quiz
 Law of Contrapositive in Math: Definition & Example
 Symmetric Property of Equality: Definition & Examples
 Additive Inverse Property: Definition & Examples
 How to Find Simple Interest Rate: Definition, Formula & Examples
 Direct Variation: Definition, Formula & Examples
 What Are Composite Numbers?  Definition & Examples
 Midsegment: Theorem & Formula
 How to Solve Simultaneous Equations
 Concentric Circles: Definition & Examples
 What is a Scale Factor?  Definition, Formula & Examples
 What is a Frequency Table?  Definition & Examples
 Dividing Decimals: Steps, Rules & Examples
 Cube Root: Definition, Formula & Examples
 Finding the Area of a Sector: Formula & Practice Problems
 Equivalent Ratios: Definition & Examples
 What Are Prime Numbers?  Definition & Examples
 What is an Equation in Math?  Definition & Examples
 Perpendicular Bisector: Definition, Theorem & Equation
 What is Compound Interest?  Definition, Formula & Examples
 Proper Fractions: Definition & Examples
 Concave & Convex Polygons: Definition & Examples
 What is Expanded Form in Math?  Definition & Examples
 Supplementary Angle: Definition & Theorem
 What is a Number Sentence?  Definition & Examples
 Writing Equivalent Expressions: Definition & Examples
 Multiplicative Identity Property: Definition & Example
 What is an Ordinal Number?  Definition & Example
 Calculating Weighted Average: Method, Formula & Example
 Divisor in Math: Definition & Example
 What is Numerical Data?  Definition, Examples & Quiz
 What is a Proportion in Math?  Definition, Practice Problems & Quiz
 How to Reduce or Simplify Improper Fractions
 Mixed Numbers: How to Add, Subtract, Multiply & Divide
 What is PEMDAS?  Definition, Rule & Examples
 Contingency Table: Statistics, Probability & Examples
 Calculating Possible Outcomes: Definition, Formula & Quiz
 Probability of Compound Events: Definition, Examples & Quiz
 What is a Math Concept?  Lesson & Quiz
 Intersection in Math: Definition, Symbol & Quiz
 Range of Values: Definition, Lesson & Quiz
 What are Roman Numerals?  Number Conversion, Chart & Quiz
 Mathematical Symbols: List, Meanings & Quiz
 How to Estimate in Math: Definition, Lesson & Quiz
 What is Probability in Math?  Definition, Lesson & Quiz
 Circle Graph: Definition, Examples & Quiz
 Addend in Math: Definition, Lesson & Quiz
 Data Points: Definition, Lesson & Quiz
 Finite Set: Definition, Lesson & Quiz
 Union of Sets in Math: Definition, Terms & Symbol
 Graphs: Types, Examples & Functions
 The Empty Set in Math: Definition, Symbol & Quiz
 Subsets in Math: Definition, Examples & Quiz
 Binomial: Definition, Examples & Quiz
 What is Ratio in Math?  Definition, Lesson & Quiz
 What are Variables in Math?  Definition, Examples & Quiz
 What is a Pie Chart?  Definition, Examples & Quiz
 What is a Positive Integer?  Definition, Examples & Quiz
 What is the Product in Math?  Definition, Lesson & Quiz
 Additive Property: Definition, Examples & Quiz
 Calculate Percentages: Formula, Lesson & Quiz
 Distance in Math: Formula, Lesson & Quiz
 What is Area in Math?  Definition, Formula & Quiz
 Origin in Math: Definition, Lesson & Quiz
Precalculus
 Special & Common Trig Values: Lesson & Quiz
 Tangents: Definition, Properties & Quiz
 Pythagorean Identities in Trigonometry: Definition & Examples
 Radian Measure: Definition, Formula & Quiz
 Tangent in Trigonometry: Definition, Lesson & Quiz
 Arcsine: Definition, Lesson & Quiz
 Arccosine: Definition, Lesson & Quiz
Algebra
 Consecutive Integers: Definition & Formula
 Interquartile Range: Definition, Formula & Example
 Probability Distribution: Definition, Formula & Example
 Perfect Square: Definition, Formula & Examples
 Commutative Property: Definition & Examples
 What is a Variable Expression?  Definition & Example
 What is Slope Intercept Form?  Definition, Equation & Examples
Statistics
 Dynamic Assessment: Definition, Process & Examples
 What is a Null Hypothesis?  Definition & Examples
 Sample Space in Statistics: Definition & Examples
 Uniform Distribution in Statistics: Definition & Examples
 What is Theoretical Probability?  Definition, Formula & Examples
 Permutation: Definition, Formula & Examples
 Categorical Data: Definition, Analysis & Examples
Calculus
 Principal Square Root: Definition & Example
 Undetermined Coefficients: Method, Examples & Quiz
 Optimization Problems in Calculus: Examples, Lesson & Quiz
 Circular Functions: Equations, Examples & Quiz
 Finding Critical Points in Calculus: Function, Graph & Quiz
 Integration Problems in Calculus: Solutions, Examples & Quiz
 Solving Complex Equations: Examples, Lesson & Quiz
Basic Math
 Aryabhata (Mathematician): History & Biography
 What Are Mixed Numbers?  Definition & Examples
 Upper Quartile: Definition & Formula
 Arabic Numerals: Definition, History & Example
 What Are Compatible Numbers?  Definition & Examples
 Interval Notation: Definition & Examples
 Arithmetic Mean: Definition, Formula & Example
Geometry
 What is a Central Angle?  Definition, Theorem & Formula
 Total Surface Area: Definition & Formula
 How to Find the Slope of a Perpendicular Line
 How to Find the Radius of a Circle: Definition & Formula
 454590 Triangle: Theorem, Rules & Formula
 Identity Matrix: Definition & Properties
 What Are Adjacent Angles?  Definition & Examples

Education Portal Instructors
Education Portal's 53 instructors bring a diverse array of experience and expertise to each course. From teaching philosophy in Athens, Greece, to exploring the mystery of genetics, each instructor is uniquely qualified to bring students the best online learning experience possible. Meet them now!

Jessica Bayliss, M.S.
Jessica is our Director of Education and leads the development of Education Portal's courses. She has 10 years of experience in education and online teaching. Her work with students of all age levels drives her belief in the power of online resources to make higher education more affordable and efficient. Jessica's favorite part of the day is reading feedback from Education Portal's students. She has a bachelor's degree from the University of Illinois and a master's degree in instructional technology from Texas A&M  Kingsville. 
Greg Chin, Ph.D.
Greg has taught genetics, molecular biology, and general biology to high school, collegiate, and postgraduate students at Stanford University, the University of California, Los Angeles, Santa Clara University and the Dolan DNA Learning Center at Cold Spring Harbor Laboratory. He has also taught science workshops for the general public and led biology teacher enrichment workshops throughout the U.S. He received a B.S. in Genetics from the University of California, Davis, and a Ph.D. from Stanford University. Find out how your genes work in Greg's introduction to genetics video lesson! 
Max Pfingsten, M.Ed.
Max has taught classics, history and philosophy at a variety of levels at the Dikemes Academy in Athens, the Boulder Valley School District, University of Colorado at Boulder and the Illinois Mathematics and Science Academy (IMSA). His work is noteworthy for its synthesis of technology and simulation with more traditional teaching approaches. He received a B.A. in Classics from Depauw University, a M.A. in Classics from University of Colorado at Boulder, and a M.Ed. from Jones International University. See Socrates come to life in Max's lesson on the life, death, and philosophy of the great Socrates.  Meet all 53 of our instructors
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