This textbook covers Algebra II and Trigonometry topics with chapters on equations and inequalities, linear equations and functions, systems of linear equations and inequalities, matrices, quadratic functions and more.

CK-12 Foundation's Algebra FlexBook is an introduction to algebraic concepts for the high school student. Topics include: Equations & Functions, Real Numbers, Equations of Lines, Solving Systems of Equations & Quadratic Equations.

CK-12 Middle School Math Concepts for seventh grade provides a complete textbook. It presents topics including algebraic thinking, patterns, decimals, decimal operations, fractions, fraction operations, integers, integer operations, ratios, rates, proportions, percents, percent applications, equations, solving equations, inequalities, functions, graphing functions, geometry, plane geometry, solid geometry, area, perimeter, surface area, volume, statistics including mean, median, mode and range, graphing and types of graphs, and probability.

Calculating mean absolute deviation, variance, and standard deviation Mathematics Instructional Plans (MIPs) help teachers align instruction with the 2016 Mathematics Standards of Learning (SOL) by providing examples of how the knowledge, skills and processes found in the SOL and curriculum framework can be presented to students in the classroom.

Students research two variables about the car model they intend to purchase. They use Desmos to compare these same variables across five different car models. Students use analysis of bivariate data in order to decide which car makes sense to buy. Students prepare and share a summary statement and include desmos screen shots in order to justify their purchase. This task offers students experiences in making predictions, using data, scatterplots, or the equation of the curve of best fit for decision-making in a practical problem.

The cell phone task is open-ended in that it allows students to use multiple solution strategies. Students can create an algebraic inequality or reason through the problem differently. Students can also get different answers (decimal or whole number) as along as they are able to provide reasoning towards their solution.

The cell phone task is open-ended in that it allows students to use multiple solution strategies. Students can create an algebraic inequality or reason through the problem differently. Students can also get different answers (decimal or whole number) as along as they are able to provide reasoning towards their solution.

Students solve multistep equations (with variables on only one side).  Students choose between two models/equations at each of six points in this Google Form activity.

This resource from the Mathematics Assessment Project was found at OER Commons. https://www.oercommons.org/courses/finding-equations-of-parallel-and-perpendicular-lines/view. This lesson unit is intended to help teachers assess how well students are able to understand the relationship between the slopes of parallel and perpendicular lines and, in particular, to help identify students who find it difficult to: find, from their equations, lines that are parallel and perpendicular; and identify and use intercepts.

It is often said that mathematics is the language of science. If this is true, then the language of mathematics is numbers. The earliest use of numbers occurred 100 centuries ago in the Middle East to count, or enumerate items. Farmers, cattlemen, and tradesmen used tokens, stones, or markers to signify a single quantity—a sheaf of grain, a head of livestock, or a fixed length of cloth, for example. Doing so made commerce possible, leading to improved communications and the spread of civilization.

This course covers relations and functions, specifically, linear, polynomial, exponential, logarithmic, and rational functions. Additionally, sections on conics, systems of equations and matrices and sequences are also available.

This is a remix of "Comparing Speeds in Graphs and Equations" by Illustrative Mathematics. The activity can be used to introduce the characteristics of direct variations. There is also a link to a direct and inverse variation foldable.

Performing complex number arithmetic Mathematics Instructional Plans (MIPs) help teachers align instruction with the 2016 Mathematics Standards of Learning (SOL) by providing examples of how the knowledge, skills and processes found in the SOL and curriculum framework can be presented to students in the classroom.

This resource includes a Khan Academy video, two truths and a lie activity, and a follow-up review game.

These activities include a video and Desmos activity to help students understand complex numbers.

Exploring Composition of Functions Mathematics Instructional Plans (MIPs) help teachers align instruction with the 2016 Mathematics Standards of Learning (SOL) by providing examples of how the knowledge, skills and processes found in the SOL and curriculum framework can be presented to students in the classroom.

Students evaluate functions to make a connection to compositions of functions.  Students then practice finding compositions of functions.  Students end the activity evaluating compositions of functions both algebraically and graphically with a challenge that includes multiple compositions.

The lesson provides multiple resources for helping students learn about compound inequalities, how to represent solutions on a number line, and the different types of solutions.