Assessment
Concord Consortium

Three Circles

For Students 9th - 12th Standards
Round and round and round we go. Given a diagram of three circles, two of which share a point with the third circle, learners identify the radius of each circle. Doing so requires setting up and solving a system of equations based on the...
Lesson Plan
Illustrative Mathematics

Joining Two Midpoints of Sides of a Triangle

For Teachers 9th - 11th Standards
Without ever using the actual term, this exercise has the learner develop the key properties of the midsegment of a triangle. This task leads the class to discover a proof of similar triangles using the properties of parallel...
Lesson Plan
Curated OER

Time Travel, Black Holes, and Relativity

For Teachers 8th - 12th
Learners read the novel, The Time Machine, and compare H.G. Well's perceptions of the future with those presented in The Third Wave, by Alvin Toffler. They research current scientific and mathematical theories that relate to space and time.
Lesson Plan
Curated OER

Moving Straight Ahead

For Teachers 6th - 9th
Students analyze the relationship between speed, time and distance. In this math lesson, students plan a school trip. Students determine the efficiency and cost effectiveness of a trip.
Lesson Plan
Curated OER

Wind Through Your Socks

For Teachers 9th - 11th
Learners collect and graph data. In this algebra lesson plan, students investigate speed and distance and their application in the real world. They relate concepts of algebra and geometry as it relates to distance, vectors and speed.
Lesson Plan
Curated OER

Ladybug Adventures

For Teachers Pre-K - 2nd
Students solve problems using mathematical skills. In this math lesson, the students use math concepts, to design a virtual path for a ladybug. The students will reinforce their skills in algebra and geometry concepts.
Worksheet
Curated OER

Polar Coordinates Game

For Students 10th - 11th
In this algebra game, students pair off to plot polar coordinates on a circular graph. They attempt to hit each other by guessing their opponents location on the graph. This is a great way to reinforce the concept of polar coordinates....
Lesson Plan
Curated OER

Linear Functions

For Teachers 5th
Fifth graders investigate the concept of a function in relationship to how it is used. The concept is essential for the future study of Algebra. They apply the use of patterns with its relationship to functions.
Lesson Plan
Curated OER

Using Math with Sale Papers

For Teachers 5th
Fifth graders estimate their results and then prove through calculations. For this math lesson, 5th graders solve problems using multiplication, division, addition, and subtraction. They also use mental math to solve their problems.
Worksheet
Curated OER

Quadratic and Linear Functions

For Students 11th
In this Algebra II learning exercise, 11th graders review and apply the basic concepts for solving linear and quadratic equation. The one page learning exercise contains twelve problems. Solutions are not provided. 
Lesson Plan
Curated OER

Writing Equations

For Teachers 9th - 10th
Students write linear equations. In this algebra lesson, students are given information and asked to write an equation. They solve real world problems apply concepts of linear equations.
Lesson Plan
Curated OER

The Fractal Geometry of Nature

For Teachers 8th - 10th
Students identify patterns found in nature. In this algebra lesson, students model situation in nature using fractals. They investigate biological geometric structures and draw conclusion based on geometric concepts.
Lesson Plan
Curated OER

Math Games

For Teachers 9th - 12th
Students play games as they review math concepts on grids. In this algebra lesson, students review quadrants and other parts of a coordinate system as they play a game. They must finish a word problem by making their final answer forty.
Lesson Plan
Curated OER

Graphing Ordered Pairs

For Teachers 7th
Seventh graders investigate the concept of ordered pairs as found in Algebra. They are introduced to the data set that corresponds to the coordinate system. Also students practice the graphing the ordered pairs using the x and y axis.
Lesson Plan
Curated OER

Writing Inequalities

For Teachers 9th
Ninth graders investigate the concept of an inequality. They begin the lesson by covering relevant vocabulary. They write an inequality for each word problem given. Then they translate problems from words to algebraic inequalities.
Lesson Plan
Curated OER

Two Terrains

For Teachers 9th - 12th
Students compare two cell phone providers and relate those concepts to motion. In this algebra lesson, students identify the unknown in a problem using variables. They calculate the velocity, motion and displacement of different objects.
Lesson Plan
Curated OER

What's Your Story

For Teachers 9th - 11th
Students rewrite word problems using equations. For this algebra lesson, students relate the concept of equations and symbols to the real world. They graph their solutions on a graph and analyze it.
Lesson Plan
Curated OER

Exploring Exponents

For Teachers 6th - 8th
Middle schoolers solve problems dealing with exponents. In this algebra lesson, students solve problems using interactive online problems. They create visuals and gain a better understanding of the concepts.
Lesson Plan
Curated OER

Weight No More

For Teachers 8th - 10th
Learners relate the concept of gravity to math. For this algebra lesson, students define scientific terminology relative to gravity, weight and centripetal force. They measure the different dimensions of a cylinder as they discuss...
Lesson Plan
Curated OER

Pardon me. Do You Have exChange for a Dollar?

For Teachers 5th - 8th
Young scholars are familiar with United States currency-dollar and cents. They are asked to compare it with currency of another country. Students explore currencies of various countries using the Internet, video, and hands-on...
Lesson Plan
Curated OER

Rational Function Graphs

For Teachers 7th - 9th
Students use algebraic methods to represent and solve problems. Using a graphing calculator, students solve rational and inequality problems. They visually demonstrate solutions of functions through graphing. Students answer questions...
Lesson Plan
National Security Agency

A Balancing Act: Solving Multi-Step Equations

For Teachers 6th - 8th Standards
Wow! Put on that thinking cap and solve multi-step equations. To solve equations, learners review the use of the distributive property and combining like terms. This three-day lesson comes with about 20 pages of worksheets, warm-ups,...
Lesson Plan
Curated OER

Is Bigger Always Better?

For Teachers 6th - 8th
Explore rational numbers with the young mathematicians in your class. They will investigate decimals, fractions, and percents before ordering and comparing rational numbers. This multi-day unit includes differentiation activities and...
Lesson Plan
Curated OER

Find the Factors and Prime Factors

For Teachers 4th - 6th
Show the class how to find the factors of numbers. They use a variety of strategies, including unifix cubes, to find the factors of a whole number. This resource includes clear procedure to follow. Included are an anticipatory set,...

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