West Contra Costa Unified School District
Arithmetic Series
Fall for a series. Learners determine how to find out how far a skydiver falls in the first 20 seconds. The Algebra II lesson introduces the idea of adding up the terms of an arithmetic sequence. Pupils learn how to use Sigma notation to...
Curated OER
Scatterplots and Regressions
In this scatterplots and regressions instructional activity, students solve 6 different types of problems related to graphing scatterplots and interpreting regressions. First, they create a scatterplot from the given data coordinates and...
Curated OER
Exponents: Scientific Notation
In this scientific notation instructional activity, 9th graders solve and complete 8 various problems related to exponents and writing scientific notation of numbers. First, they write whole numbers, decimals, and other types of numbers...
Curated OER
Solving Quadratic Equations
For this quadratic equations worksheet, 9th graders solve and complete 7 different problems that include factoring quadratics. First, they solve for the values of x that make the equation true. Then, students substitute their values into...
Curated OER
Mobile vs. Money
Young scholars research the internet and use the information they find to plot straight line graphs. They use graphs to make comparisons of the various packages offered. Students interpret graphs and solve problems based on varying...
Curated OER
The Shortest Distance
Students, working on their GED, examine the steps used to resolve the unknown sides of a right triangle. They express the square root function as an exponential function and derive the distance formula using principles of geometry.
Purple Math
Purplemath: Multiplying Simple Polynomials
This Purplemath tutorial shows three methods for multiplying polynomials: distribution, FOIL, and columns.
Purple Math
Purplemath: Completing the Square: Solving Quadratic Equations
Purplemath gives several examples which clearly show the process of completing the square to find the maximum and minimum solutions to a quadratic equation.
Purple Math
Purplemath: Basic Triangle Values
This Purplemath lesson explains a simple pictorial way to remember basic reference angle values.
Purple Math
Purplemath: Logarithms: Introduction to "The Relationship"
Purplemath does a wonderful job of explaining logarithms. The lesson begins with a discussion of the relationship between logarithms and exponentials and very simple examples. The lesson gives important information regarding logarithms...
Purple Math
Purplemath: Polynomials: Definition and Evaluation
A great lesson on polynomials is found at this Purplemath resource. Provides a clear definition of what a polynomial is, tells how to tell what the different degrees of a polynomial are, and how to simplify polynomials by combining like...
Purple Math
Purplemath: Adding & Subtracting Rational Expressions: Introduction
Finding common denominators is no problem with Purplemath. Use this lesson to learn how to add and subtract rational expressions with these great examples.
Purple Math
Purplemath: Square Roots: Introduction & Simplification
Purplemath offers a well-described definition of radicals and square roots. The lesson is very easy to understand. Many examples.
Purple Math
Purplemath: Straight Line Equations: Slope Intercept Form
Slope-intercept form of a line is shown in formulas and examples with this Purplemath lesson. There are examples of slope-intercept with the slope and a point and with two points. Includes interactive widgets for exploring concepts.
Purple Math
Purplemath: Absolute Value Inequalities
Purplemath.com offers a discussion is presented on how to solve absolute value inequalities. This lesson contains worked problems of solving absolute value inequalities and finding absolute value expressions given the solution.
Purple Math
Purplemath: Absolute Value
Purplemath.com offers a comprehensive lesson on absolute value that provides some examples.
Purple Math
Purplemath: X and Y Intercepts
This lesson from Purplemath.com explains how to find x and y intercepts then shows exmples.
Purple Math
Purplemath: Factor Theorem
Purplemath.com discusses the Factor Theorem, explaining its relationship to the Remainder Theorem. The lesson has a link to synthetic division, a key to discovering if a value is a root.
Purple Math
Purplemath: Homework Guidelines for Mathematics
This Purplemath guide shows you exactly how to format your homework papers so they look neat and organized.
Purple Math
Purplemath: Variable
With this Purplemath lesson, find the answer to this question with examples to show how variables are written and used.
Purple Math
Purplemath: Rational Expressions: Finding the Domain
Use this Purplemath lesson to learn everything you've ever wanted to know about simplifying rational expressions. You'll find great explanations and examples on this page.
Purple Math
Purplemath: Multiplying Rational Expressions
Not only will you learn how to multiply and divide rational expressions, but Purplemath shows you what common mistakes are made so you can avoid them.
Purple Math
Purplemath: Complex Fractions
A brief lesson, including good examples, on complex fractions is provided by PurpleMath.
Purple Math
Purplemath: Lcm & Gcf
Purplemath shows an easy and orderly way to determine the GCF and LCM of any two numbers. Even large numbers won't be a challenge with this method.