Khan Academy
Khan Academy: Interpreting the Aggregate Demand/aggregate Supply Model
In order for a macroeconomic model to be useful, it needs to show what determines total supply or total demand for the economy and how total demand and total supply interact at the macroeconomic level. This model is called the aggregate...
CK-12 Foundation
Ck 12: Elem Math: Mixed Review Place Value Problems Numbers to 10000
[Free Registration/Login may be required to access all resource tools.] The video describes how to find the difference of two numbers with digits in the thousands place. The video is followed by a series of practice questions to assess...
Khan Academy
Khan Academy: Add and Subtract Fractions: Word Problems
In this exercise, students practice adding and subtracting fractions with unlike denominators word problems. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Soft Schools
Soft Schools: Fraction Word Problem Quiz
Take a quiz that focuses on fractions in word problems. Summary of the score is shown at the end of the quiz, and students may review missed questions.
Soft Schools
Soft Schools: Money Word Problems Quiz
Generate a quiz of money word problems in a real-life context. Students will use addition, subtraction, multiplication, and division to solve the problem. An assessment summary is given at the end of the quiz, and students may review...
Upper Canada District School Board
Tom Stretton's Advanced Placement Chemistry: Ap Exam Review
Use these sample multiple-choice questions to prepare and study for AP exam for Chemistry. A strong emphasis is on writing net ionic equations, knowing the solubility rules, solving equilibrium problems.
United Nations
Unesco: Algebra Review (In Arabic)
This page, part of a larger UNESCO site on math and science education, has 15 basic, open- and multiple-choice algebra questions, with the correct answer immediately following the question. Entirely in Arabic.
Read Works
Read Works: Nasa's Stardust Review
[Free Registration/Login Required] This nonfiction passage discusses the world problem of unsafe drinking water. This passage reinforces essential reading comprehension skills. Opportunities for vocabulary acquisition are also included....
Khan Academy
Khan Academy: Fractions as Division Word Problems
Practice word problems that involve using the fraction bar as division. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Soft Schools
Soft Schools: Biodiversity Quiz (Ecological Problems)
Take an interactive quiz over ecological problems affecting the environment. After completing the quiz, check your score, and then revisit any incorrect question for further review.
University of Arizona
The Biology Project: Acids and Bases Problem Set
How well do you know acids and bases? This interactive resource provides the user with questions and tutorials to provide feedback for those topics you don't understand. Can be used for test review.
Khan Academy
Khan Academy: Indexing and Its Limitations
How do we adjust for inflation?. It includes review questions and problems.
Khan Academy
Khan Academy: Positive Externalities of Innovation
Innovation often benefits many people, not just the person or company that innovated.
Khan Academy
Khan Academy: The Structure of Costs in the Long Run
In the long run, you can change anything about your business, so all costs are variable.
Khan Academy
Khan Academy: The Economics of Pollution
Pollution is an example of a negative externality. Despite the gradual reduction in emissions from fossil fuels, many important environmental issues remain. Along with the still-high levels of air and water pollution, other issues...
Khan Academy
Khan Academy: How Perfectly Competitive Firms Make Output Decisions
See examples of how perfectly competitive firms decide how much to produce.
Khan Academy
Khan Academy: Efficiency in Perfectly Competitive Markets
Why are perfectly competitive markets efficient?
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: High School Basic Algebra Review
An overview of basic high school algebra topics can be found here. Absolute value, signed numbers, inequalities and equations, mixture problems, and direct and indirect variation are all listed, each with links to questions posed by...
McGraw Hill
Glencoe: Self Check Quizzes Using Proportions 2
The online assessment reviews proportion applications. Students complete the multiple choice questions to test their proportion skills. Hints and solutions are included.
The Write Place
Literacy Education Online
Literacy Education Online (or LEO) is a great place to start if you need help with your writing. The homepage is organized around kinds of problems or questions you might have concerning your writing. Find your problem, click on the...
Purple Math
Purplemath: Purplemath Resources
Algebra teacher Elizabeth Staple offers answers to the question, "How do you really do this stuff?" Detailed and down-to-earth, Purplemath has dozens of graduated and cross-referenced lessons, links to other valuable resources, and...
Khan Academy
Khan Academy: Adjusting Nominal Values to Real Values
When you examine economic statistics, it's crucial to distinguish between nominal and real measurements so you know whether or not inflation has distorted a given statistic. Learn how to adjust GDP numbers for inflation in this article....
Purple Math
Purplemath: Practical Algebra Lessons
Pre-Algebra and algebra lessons, from negative numbers through Pre-Calculus. Grouped by level of study. Lessons are practical in nature, informal in tone, and contain many worked examples and warnings about problem areas and probable...
Math Slice
Math Slice: Math Millionaire
Answer only 15 questions to become a Math Millionaire when you play this interactive game that focuses on a variety of math skills. An engaging, fast paced, and fun way for learners to review math concepts. Answers are checked immediately.