University of Texas
Complex Numbers
Are complex numbers and binomials similar? This stack of slides provides an introduction to complex numbers and shows how to operate with them. The worked examples show a connection between operating with binomials and operating with...
Concord Consortium
City of New Orleans
In the United States, most trains operate at a top speed of 100 miles per hour. Scholars use information on the distance and time of a train trip to determine if the train ever reaches a specific speed. They connect pieces of information...
Willow Tree
Patterns - Numbers, Shapes, etc.
Find the pattern is the name of the game! Learners examine different patterns represented by numbers, shapes, and words. They must describe the pattern, predict the result in a given position, and find an equation that...
Illustrative Mathematics
Bundling and Unbundling
Seven tens, plus five ones, equals 75. Five ones, plus seven tens, also equals 75. These are the types of equations learners are asked to make true in a learning exercise with 11 unfinished equations.
Curated OER
Avoiding Carbon Dioxide Emissions from Burning Fossil Fuels
Chemistry and earth science meet in a lesson on carbon dioxide emissions. After reading about atmospheric problems caused by using fossil fuels, science stars balance equations for the burning of different alkanes. They compute the...
Mr. E. Science
Motion
An informative presentation covers motion, metric system, conversions, graphing of coordinates and lines, speed, velocity, and acceleration problems, as well as mean calculations. This is the first lesson in a 26-part series.
Illustrative Mathematics
Identifying Exponential Functions
Class members have the opportunity to quickly change the variables of an exponential graphs through the use of sliders on Desmos. Four graphs are given and young mathematicians, through the use of the graphing app, can discover which...
Education Development Center
Integer Combinations—Postage Stamps Problem (HS Version)
It seems the post office has run out of stamps! Learners build all the values of postage available if the post office only sells five- and seven-cent stamps. The task provides an opportunity to create an expression in two variables and...
101 Questions
Pea Problem
Understanding volume means less mess in the kitchen. Viewers observe a can of peas and a small bowl. They must determine if all of the peas from the can fit into the bowl without spilling using volume formulas to solve the equation.
DK Publishing
Estimating
Through estimating, scholars are able to make these word problems simpler as they multiply to find approximate answers. Using an example as guidance, they solve five scenarios, each of which has space for learners to show their work. The...
CK-12 Foundation
Repeating Decimals: Does 1 equal 0.999... ?
Six questions make up a challenging interactive that tests scholars' knowledge of repeating decimals. Mathematicians answer true or false and multiple-choice questions with help from a tool that highlights decimal movement in an...
Curated OER
Problem Solving: Write an Equation
For this equation worksheet, students read a simple word problem, write an equation to solve it, then write their own story problem and equation.
Curated OER
Solving Linear Equations
In this linear equations worksheet, students solve six linear equations and check their work. Then they translate the next 4 problems into an equation and solve those too. Students first combine like terms when necessary and then solve...
Curated OER
Rewriting and Solving Quadratic Equations
In this quadratic equations activity, students rewrite five given equations into quadratic equations by changing the variables. Students then find the real solutions for three quadratic equations.
Curated OER
Algebraic Equations
In this algebraic equations worksheet, 9th graders solve 10 different problems that include solving various types of algebraic equations. First, they determine the equation of a line and solve the absolute value of an inequality shown....
Curated OER
Solving Equations
In this equations worksheet, students solve 10 problems in which subtraction is used to isolate the variable. There are decimal numbers to the tenths place included on this page.
Curated OER
Solving Exponential Equations
In this exponential equations worksheet, 9th graders solve 10 different problems related to solving exponential equations. They convert one side of the equations to the other side to another base so that the powers can be set to equal...
Curated OER
Systems of Equations 2
In this systems of equations worksheet, 9th graders solve and graph 9 different problems that apply the systems of equations. First, they solve each system of equations by using the graphing method. Then, students write the solution for...
Curated OER
Equations: Use Subtraction
In this equations worksheet, students solve 10 problems in which subtraction is used to isolate the variable. These are simple one-step equations.
Curated OER
Solving Linear Systems by Substitution #1
In this problem solving learning exercise, 6th graders work out and solve 4 mathematical equations involving linear systems by substitution #1.
Curated OER
System of Equations
In this system of equations worksheet, students solve and complete 36 various types of problems. First, they solve each system of equations by elimination. Then, students check their solutions by substitution into one of the original...
Curated OER
Solving Quadratic Equations
In this quadratic equations activity, 9th graders solve 10 different problems that include various quadratic equations. First, they factor out the equation and set it to zero. Then, students solve each factor and check their work by...
Curated OER
Solving Exponential Equations
In this exponential equations instructional activity, 9th graders solve 10 different problems that lack a common base and include various exponential equations. First, they write the equations with comparable exponential expressions on...
Curated OER
Systems of Equations
In this systems of equations worksheet, students solve ten sets of problems by using the substitution method. They first decide which variable they are going to solve for, x or y. Then, students replace that value with the other equation...