This five-page essay provides an example of a Problem-Solution Essay. Clicking on the "Writer's Guide" link in the upper right-hand corner of the page enables the user to get tips, directions, and explanations on the essay.

Entitled "Protecting Its People," this model essay from NPR hosts Tom and Ray Magliozzi is a plea for more government intervention and regulation for what the writers see as potential safety risks for citizens. Requires Adobe Reader. [PDF]

This site provides great practice on the concept of solving equations from word problems. Students can first learn about the topic by watching a step by step instruction video that also points out areas of concern. Finally, students can...

The aim of this unit is for students to develop their persuasive writing and information gathering skills using various forms of information and communication technology. It is hoped that the context of 'teenage problems' will provide an...

[Free Registration/Login may be required to access all resource tools.] Learn how to use the discriminant to solve problems and determine the number of solutions to quadratic equations.

Need some challenging problem-solving work for your students in the following areas: Discrete, Geometry, Numbers, and Code Breaking? This is the place for an enormous database of problems aimed at high school age students. They are...

The Energy Systems and Solutions unit brings students through the exploration of science and engineering concepts as they relate to energy issues in everyday life. Issues surrounding energy production and energy consumption provide a...

In this activity, students use the virtual lab to create a 0.025M glucose solution from a standard 1M glucose solution. First, they calculate the correct volumes of 1M glucose solution and water to mix together to create the final 0.025M...

In this activity, students use the virtual lab to create 500mL of 3M HCl solution from a concentrated stock solution of 11.6M HCl. They must first calculate the correct volumes of 11.6M HCl solution and water to mix together to create...

This resource offers two different topic problems per week for students to solve. A video showing the method to solve each problem is given. After viewing a solution method for solving the problem try one on your own where you can only...

Twenty-six problems present a variety of practice solving linear inequalities. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution" button to...

Seventeen problems present a variety of practice working with augmented matrices. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution" button...

In this limiting reagents problem, students mix together solutions in different ratios in an attempt to produce a final solution that contains only 1 product.

In this advanced limiting reagent problem, students use the virtual lab to determine the concentration of a solution of DNA by reacting it with known amounts of a fluorescent dye which binds to the DNA.

This lesson allows students to identify environmental problems in their community, to choose a problem, to analyze it, to find solutions for it, and to get involved in environmental action. This is a well-structured lesson and, while it...

Twenty-seven problems present a variety of problems working with writing numbers in scientific notation or in standard form. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the...

Nineteen problems present a variety of problems working with various aspects of exponential functions. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the...

In this activity, students use the virtual lab to prepare a sucrose solution for a soda recipe. They next calculate the concentration of their solution in terms of molarity, percent mass and density. Finally, they compare the density of...

Think outside of the box! A lesson helping students consider innovative ways of solving problems communities might experience, such as the ability to provide clean water to residents.

Twenty-four problems presented on a variety of Plane Geometry topics. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution" button to check...

Twenty-four problems covering a variety of solid figure topics: dimensions, volume, surface and base areas. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click...

Twenty-three problems cover a variety of probability topics. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution" button to check each step of...

Twenty-five problems present a variety of practice solving one-step equations with addition and subtraction. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click...

Nineteen problems present a variety of practice finding the system of linear inequalities or the system of linear equations. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the...