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The Rule of 72  Why it Works

Growth (Algebra)+ 
JavaScript 
Support Material 

[0]

The rule of 72 applies to annually compounded interest, this explanation looks at the case of continuously compounded interest first and then annually compounding interest.
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College Savings Calculator

Growth (Algebra)+ 
Java Applet 
Tool 

[0]

Use our College Savings calculator to determine the amount you must invest each year to have enough money to cover all college costs.
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Credit Card Debt Calculator

Growth (Algebra)+ 
Calculator 
Tool 

[0]

Use this credit card debt calculator to find out how much is owed. This can be used as a good starting point for any debt management plan. Enter all of the credit cards and outstanding installment loa...
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Credit Card Minimum Payment Ca...

Growth (Algebra)+ 
Calculator 
Tool 

[0]

Use this credit card minimum payment calculator to determine how long it will take to pay off credit cards if only the minimum payment is made. Enter the credit card information below and press "view ...
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Credit Card Repayment Calculat...

Growth (Algebra)+ 
Calculator 
Tool 

[0]

Based on the information you provide, the calculator will give you an estimate of how long it will take you to pay off your credit card balance. The calculator assumes:
* you make no more charg...
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Debt Payoff Calculator

Growth (Algebra)+ 
Calculator 
Tool 

[0]

This debt payoff calculator can show how to accelerate the debt payoff. The process is simple; just apply a portion of the consolidated loan's monthly payment savings to the consolidated loan's balanc...
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Loan Consolidation Calculator

Growth (Algebra)+ 
Calculator 
Tool 

[0]

Getting a consolidation loan can do more than pay off debt. It is possible to create a sizable nest egg by investing all or a portion of the monthly payment savings. After a few years, the results are...
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Mortgage Calculator

Growth (Algebra)+ 
JavaScript 
Tool 

[0]

The mortgage calculator will show you how much your monthly payment will be. It can also show the effect of adding extra payments.
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Population Dynamics in Central...

Growth (Algebra)+ 
JavaScript 
Tool 

[0]

This model represents the interactions between members of a food chain; in this case, vegetation, rabbits and foxes. This simulation can be used to answer questions such as: What happens when vegetati...
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Rule of 72

Growth (Algebra)+ 
JavaScript 
Tool 

[0]

The rule says that to find the number of years required to double your money at a given interest rate, you just divide the interest rate into 72. For example, if you want to know how long it will take...
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Savings Calculator

Growth (Algebra)+ 
Java Applet 
Tool 

[0]

Use this savings calculator to see how a consistent approach to investing can make your money grow. Whether saving for a house, a car, or other special purchase, the savings calculator will help you d...
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Shedding Light on the Subject

Growth (Algebra)+ 
Java Applet 
Tool 

[0]

This is a full lesson that gives students experience with exponential functions in an application format. There is a movie, an applet for gathering information, and a graphing applet. There is a les...
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Student Loan Debt Calculator

Growth (Algebra)+ 
Calculator 
Tool 

[0]

The "Student loan debt calculator" applies two simple principles to paying off highinterest debt.
1. Consolidate the existing student loans
2. Use the extra cash every month to pay off other hi...
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Using "Exponential Decay" tool...

Growth and decay applications (Algebra II) 
Java Applet 
Story 

[0]

The "Exponential Decay" Java applet was used on the discussion board with an online Algebra II course. Students were asked to use the applet, and then go to the discussion board and discuss the questi...
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Deer Population

Growth and decay applications (Algebra II) 
JavaScript 
Tool 

[0]

Explore examples of exponential growth and decay, bounded growth, and carrying capacity in this simulation of the effects of birth and death rates and food supply on a deer population. Includes questi...
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Exponential Decay

Growth and decay applications (Algebra II) 
Java Applet 
Tool 

[1]

The applet below is a simulation of the law of radioactive decay. The red circles of this simulation symbolize 1000 atomic nuclei of a radioactive substance whose halflife period T1/2 amounts to 20 s...
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How Long Will It Take To Pay O...

Growth and decay applications (Algebra II)+ 
Calculator 
Tool 

[0]

Americans today owe more money than ever before. The fact that 'interest never sleeps' means that the situation will continue to worsen unless steps are taken at the individual level to reduce or elim...
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Mortgage Calculator

Growth and decay applications (Algebra II)+ 
JavaScript 
Tool 

[0]

A mortgage calculator that offers graphical representations of an amortization graph, repayment chart, and a balance graph.
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Strategies for the Prevention ...

Growth and decay applications (Algebra II)+ 
JavaScript 
Tool 

[0]

Simulation of the spread of influenza in a day care, an office building, and a city. Variable parameters include population size, vaccination, quarantine, rates of survival, and more.
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Hamiltonian Cycles

Hamiltonian circuits (Discrete Math) 
Flash 
Tool 

[0]

This set of problems consists of a handful of randomly selected graphs for which the user is to find a Hamiltonian circuit or trail (i.e., a walk in the graph that uses every vertex exactly once) if i...
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Exploring Histograms

Histograms, freq. dist (Math 6)+ 
Java Applet 
Activity 

[1]

The user will create their own set of data and then see how changes can occur in the mean, median, and mode and the shape of the histogram when changes are made in the data set in this activity.
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Histogram

Histograms, freq. dist (Math 6)+ 
Java Applet 
Tool 

[3]

This activity allows the user to view and make their own histograms.
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Mean and Median

Histograms, freq. dist (Math 6)+ 
Flash 
Tool 

[1]

This flash allows the student to load and modify six existing datasets. The flash calculates the mean, median, and quartiles, and plots a histogram. Students are encouraged to examine the effects of...
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The Histogram (Amsco Integrate...

Histograms, freq. dist (Math 7)+ 
Flash 
Support Material 

[0]

This minilesson explains histograms and how to draw them.
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History of Geometry

History of geometry (Geometry) 
Computer 
Support Material 

[2]

This is a brief history of geometry by general topics (e.g. coordinate geometry).
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