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Activity
Illustrative Mathematics

6.EE.4 Equivalent Expressions

For Teachers 5th - 7th Standards
Straight to the point, learners are asked to compare a set of five expressions, determine which are equivalent, and then write equivalent equations for those that do not have any. A benefit is that they will review using properties of...
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Activity
Illustrative Mathematics

Triangular Tables

For Teachers 5th - 7th Standards
Somewhat of a puzzle, this problem gets pre-algebra preteens to write an expression representing a seating chart using triangle-shaped tables. This single task is an applicable lesson for meeting sixth grade Common Core math standards....
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Activity
Illustrative Mathematics

Distance to School

For Teachers 5th - 7th Standards
A single problem requires learners to write two expressions representing the total distance between a student's home and school over a time span of four weeks. A thorough commentary follows that will help you explore the solutions with...
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Worksheet
Yummy Math

Movies ~ Oscars 2013

For Students 6th - 8th Standards
Using a popular topic, the movies, your class can meet a Common Core criterion. They compare box office movie returns, adjust older movies' incomes for inflation, and in this way use the four operations to solve real-world problems. This...
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Lesson Plan
Mathematics Assessment Project

Using Positive and Negative Numbers in Context

For Teachers 6th - 8th Standards
Measure the temperature of your math class with a temperature-based lesson on adding and subtracting rational numbers. The thermometer serves as a vertical number line for learners as they work together to solve a temperature change...
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Worksheet
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Mathematics Assessment Project

Taxi Cabs

For Students 6th - 8th Standards
A simple real-world problem involving taxi cab fares is used to practice the multplicaiton and division of integers. How many of two different-sized taxis  are needed to transport 75 people to the airport? What is the least expensive...
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Activity
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Illustrative Mathematics

The Marble Jar

For Teachers 9th - 12th Standards
A jar is filled with 1,500 marbles and customers of a bank can enter a contest to guess the correct percentage of blue marbles. How can an employee at the bank estimate the actual percentage without physically counting all 1,500 marbles?...
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Activity
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Illustrative Mathematics

Block Scheduling

For Teachers 9th - 12th Standards
If a random sample determines that 45% of high schoolers favor block scheduling, is it possible that the actual percentage might be 50% or 60%? In this task, learners use data from a computer-generated simulation to determine the...
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Activity
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Curated OER

Complex Distance

For Teachers 10th - 12th Standards
Have learners graph complex numbers to gain a visual and mathematical understanding of the distance and the midpoint between two complex numbers. This lesson is short, but to the point, and addresses an important complex number concept....
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Lesson Plan
Illustrative Mathematics

Assessing Reading Numbers

For Teachers Pre-K - 1st Standards
Youngsters develop their number sense by rote counting from one to ten. Over time, they identify the numbers on their own and no longer rely on fixed recitation. Using numerical flashcards, a teacher will randomly choose numbers from the...
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Activity
Illustrative Mathematics

Average Cost

For Teachers 8th - 11th Standards
Here is an activity that presents a good example of a function modeling a relationship between two quantities. John is making DVDs of his friend's favorite shows and needs to know how much to charge his friend to cover the cost of making...
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Activity
Illustrative Mathematics

Influenza epidemic

For Teachers 8th - 12th Standards
This activity presents a real-world problem about an epidemic of influenza spreading through a city. Learners refer to a graph that shows the number of individuals infected in relation to the number of weeks that have elapsed since the...
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Activity
Curated OER

Integer Solutions to Inequality

For Teachers 8th - 11th Standards
When is the last time you assigned your students only one problem? This seemly simple problem requires learners think like a mathematician and reason about how to solve this compound inequality in one variable. More than just using...
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Activity
Curated OER

How does the solution change?

For Teachers 8th - 11th Standards
Four simple equations, each with two variables, try to get at the important question of reasoning about equations. The problem isn't to solve the equations, but to understand the nature of their solutions. These equations address the...
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Worksheet
Curated OER

Slope

For Students 7th - 10th Standards
Studying slope? This one page worksheet has it covered!  Learners use graphs and coordinates to find slope and also use slope to find a missing coordinate of a point on a line. The lesson also includes a real-world example that asks...
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Worksheet
Curated OER

Writing Linear Equations in Different Forms

For Students 7th - 10th Standards
This instructional activity is jam-packed with linear equations! Learners write equations in slope-intercept form and standard form. Horizontal and vertical lines are included, as well as graphs for several of the problems.  A great way...
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Activity
Illustrative Mathematics

Ants Versus Humans

For Teachers 7th - 9th Standards
You would think that humans make up more mass than ants do on this planet, but think again, and this time by performing calculations. Middle schoolers use scientific notation to compute and compare the estimated total mass of all humans...
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Activity
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Illustrative Mathematics

Kimi and Jordan

For Teachers 7th - 9th Standards
A single activity gets your math class to solve a word problem using two linear equations and two variables. They compare the summer earnings of Kimi and Jordan and then graph the solutions to determine who will save the most money in a...
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Assessment
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Illustrative Mathematics

Solving Equations

For Teachers 8th Standards
If you have two bags with an unknown number of tiles, represented by x, and you add three tiles to get seven total, you can set up a linear equation to represent the problem. Use this example and a few others to demonstrate how to solve...
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Activity
Curated OER

Fred's Fun Factory

For Teachers 9th - 12th Standards
Round and round and round she goes. Where she stops, nobody knows. This activity uses a common arcade game of chance, the spinning wheel, as a platform for computing expected values, interpreting results, and applying this knowledge to...
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Worksheet
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Curated OER

Solving Linear Inequalities

For Students 8th - 11th Standards
Walk the class through the steps of how to evaluate linear inequalities in one variable and graph the solution set. Define and discuss key vocabulary terms, then have individuals work problems of varying difficulty. Included are word...
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Worksheet
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Curated OER

Quick Graphs of Linear Equations

For Students 9th - 12th Standards
Graph equations of lines using the slope-intercept method or by plotting both x and y intercepts. Determine if two lines are parallel or perpendicular by comparing their slopes. This handout includes step-by-step directions and four...
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Lesson Plan
Curated OER

Modeling: Having Kittens

For Teachers 9th - 12th Standards
Cats can't add, but they do multiply! Determine the number of descendants of a single cat given specific facts about cats and kittens. The lesson focuses on developing strategies for problem solving using both individual and group work....
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Lesson Plan
Curated OER

Cruising

For Teachers 5th - 7th Standards
Cruise ships offer many engaging opportunities for real-world math adventures. These large, floating cities use resources with numbers into the thousands place. Young mathematicians are asked to calculate numerical information relevant...