Math
Courses
Supplemental Materials
Lesson Categories
Math
 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
 Complement of a Set in Math: Definition, Lesson & 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
 Bar Graph: Definition, Types & Examples
 What is Probability in Math?  Definition, Lesson & Quiz
 Universal Set in Math: Definition, Example & Symbol
 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
Algebra
 Commutative Property: Definition & Examples
 What is a Variable Expression?  Definition & Example
 What is Slope Intercept Form?  Definition, Equation & Examples
 What Is a Factor Pair?
 Linear Pair: Definition, Theorem & Example
 How to Solve Problems with the Elimination in Algebra: Examples & Quiz
 Greater Than Symbol in Math: Examples & Problems
Basic Math
 Multiplying Decimals: Rules, Steps & Examples
 What is a Fact Family?  Definition & Examples
 Cross Multiplication: Definition & Examples
 What is an Equivalent Fraction?  Definition & Examples
 Like Terms in Math: Definition & Examples
 What is Prime Factorization?  Definition & Examples
 Using Parentheses in Math: Rules, Lesson & Quiz
Calculus
 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
 Implicit Differentiation: Examples, Formula & Quiz
 Removable Discontinuities: Definition, Lesson & Quiz
Geometry
 Centroid: Definition, Theorem & Formula
 Formula for the Area of an Ellipse
 Positive Slope: Definition & Example
 Finding the Area of a Cylinder: Formula & Example
 How to Find the Perimeter of a Rectangle: Formula & Example
 What Is an Obtuse Triangle?  Definition & Area Formula
 Decagon: Definition & Shape
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
Statistics
 Categorical Data: Definition, Analysis & Examples
 Data Set in Math: Definition, Examples & Quiz
 Internal Consistency Reliability: Example, Definition & Quiz
 Percentile Rank in Statistics: Definition, Formula & Quiz
 Calculate Variance from the Mean: Formula, Examples & Quiz
 PValues in Statistics: Significance, Definition & Explanation
 ZScores in Statistics Explained: Formula, Lesson & Quiz

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
Contact Information
If you have a general question about Education Portal, please contact customer support.