Khan Academy
Khan Academy: What Is an Apr by Better Money Habits
You may have seen the term APR, or annual percentage rate, used in reference to everything from mortgages and auto loans to credit cards. In this piece, we look at credit card APRs which you've probably seen listed on your monthly...
Scholastic
Scholastic: Adventures in Math: Lesson 2: Saving Money by Finding the Better Buy
Middle schoolers will be able to make economically sound purchasing decisions by using unit pricing, calculating discounts, and analyzing fixed and variable costs.
![Ssec: Inflation: Are Higher Prices the Only Problem? [Pdf] Lesson Plan](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Ssec: Inflation: Are Higher Prices the Only Problem? [Pdf] Lesson Plan")
Social Science Education Consortium
Ssec: Inflation: Are Higher Prices the Only Problem? [Pdf]
This investigation begins with a discussion of spare change. Students are asked to compare and analyze peoples' attitudes toward coins today to those of the past. Students then complete an activity that teaches them how to compare...
Other
Finra Investor Education Foundation: Introduction to Earning Interest 11 & 12
Students will know and be able to use the formula for calculating compound interest and understand the effect of compounding on savings in this lesson.
Calculator Soup
Calculator Soup: Currency Converter
The Currency Converter uses the European Central Bank foreign exchange rates to calculate the conversion of any amount of one currency into the equivalent amount of another currency.
Calculator Soup
Calculator Soup: Algebra Word Problems Using Coins
This calculator helps you practice word problems that involve algebra and two unknown quantities.
Calculator Soup
Calculator Soup: Rule of 72 Calculator
Use the Rule of 72 to estimate how long it will take to double an investment at a given interest rate. Divide 72 by the interest rate to see how long it will take to double your money on an investment.
National Council of Teachers of Mathematics
The Math Forum: Calculating Sales Tax
Dr. Math is asked about calculating sales tax. A quick and easy to follow explanation of how it works using fractions, decimals, ratio, and percent.
Other
Ask Numbers: Measurement Conversion Calculators and Charts
What kind of unit conversion would you like to do? This site will allow you to do a multitude of conversions. Just click on the specific measurement you are needing to convert. It also provides a history of measurements and a chart of...
BBC
Bbc: Ks3 Maths: Percentages
KS3 Math provides interactive activities on percentages, using pence and pounds. Use the factsheet for percentage information. You may use the worksheet for percentage practice and take the test provided to check your percentage skills....
US Department of Energy
U.s. Department of Energy: Energy Savers
Find information on everything from buying energy-efficient products to using the proper landscaping for particular climates to conserve resources. Starting with an energy assessment, this website will help users reduce their consumption...
Calculator Soup
Calculator Soup: Math Word Problems: Addition & Multiplication
Practice coin word problems. This calculator helps you practice word problems that involve addition and multiplication using coins.
Texas Instruments
Texas Instruments: Constants
Students use the calculator to determine the amount of money that will accumulate in a savings account, if every month a certain sum is deposited in the account. They explore the use of the constant function key on the calculator to make...
Texas Education Agency
Texas Gateway: Ap Macroeconomics: Appendices: Present Discounted Value
The concept of a present discounted value (PDV), which is defined as the amount you should be willing to pay in the present for a stream of expected future payments, can be used to calculate appropriate prices for stocks and bonds. To...
PBS
Pbs: The Lowdown: The Math of Credit Cards
Explore how credit cards work in this video from KQED. In particular, you'll discover the impact and high cost of outstanding balances when borrowing money using credit cards. In the accompanying classroom activity, students discuss the...
University of Nebraska Omaha
Ec Ed Web: Virtual Economics Web Companion
The Virtual Economics Web Companion for K-12 economics and social studies teachers was created by the National Council on Economic Education. A wide variety of educational materials and lesson plans can be accessed through this site....
Teachnology
Teachnology: Math Lesson Plans
Great lesson plans covering a wide-range of math-related subjects.
Texas Education Agency
Texas Gateway: Chapter 5: Comparing Gdp Among Countries
By the end of this section, you will be able to explain how GDP can be used to compare the economic welfare of different nations, calculate the conversion of GDP to a common currency by using exchange rates, and calculate GDP per capita...
Education Development Center
Tune in to Learning: Multiple Percents
Have you ever seen an item that you wanted on sale for 15% of its original price? Have you tried to figure out what the sale price would be? Using this interactive lesson from T.V. 411, you can learn to calculate discounts with percentages.
Math Is Fun
Math Is Fun: Compound Interest
Explains, with examples, what compound interest is and how to calculate it using a formula. Also shows how to work backwards to calculate the present value of an investment, how compound interest is calculated for different compounding...
Math Is Fun
Math Is Fun: Internal Rate of Return (Irr)
Explains, with examples, what an internal rate of return is, its uses, and how to calculate it using the net present value.
Math Is Fun
Math Is Fun: Compound Interest Formula Derivations
Looks at how the formula for calculating the effect of compound interest is derived and how it is used to create formulas for finding the Future Value, the Present Value, the Interest Rate, and the Number of Periods. Includes lots of...
Illustrative Mathematics
Illustrative Mathematics: F Bf Susita's Account
In this task, students write an equation for the amount of money in a checking account when money is deposited and withdrawn regularly, and use it to calculate the balance at a certain time. This task asks students to determine a...
Alabama Learning Exchange
Alex: French Internet Clothes Shopping
Students practice clothing vocabulary and computer spreadsheet skills by visiting authentic French online clothing catalogs. They choose articles of clothing for purchase for themselves and family members and create a spreadsheet to...