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Resource Name 
Topic (Course) 
Technology 
Type 
$? 
Rating 

Number Puzzle

Mental math (Math 1)+ 
Flash 
Tool 

[0]

Change the numbers in the blocks at the bottom of the pyramids and explore the effect on the number in the top block. What's the highest total you can get using the numbers 1 to 5 only once?
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The Digit WorkOut

Mental math (Math 1)+ 
Flash 
Tool 

[0]

Practice your mental math with these addition, subtraction, and multiplication exercises in a range of difficulties.
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Two Less Than  PDA version

Mental math (Math 1)+ 
Calculator 
Tool 

[2]

Select the number that is "two less than" the highlighted number.
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Mental Arithmetic: Fractions

Mental math (Math 3)+ 
Computer 
Tool 
$ 
[2]

Alterable worksheet of mental math fraction problems. Fee required to print; see this page.
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Money

Mental math (Math 3)+ 
Flash 
Tool 

[0]

This module is about calculating with amounts of money, and includes factsheets, worksheets, a quiz at three levels of difficulty, and eight different games with which to practice mental addition and ...
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The 4 Digit Sequencer

Mental math (Math 3)+ 
Flash 
Tool 

[0]

Given a starting number and step size, this sequencer challenges students to deduce the terms of a sequence by viewing subsets of the pattern. The sequencer allows for the input of fourdigit and nega...
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XPMath: Coins Mystery

Mental math (Math 3)+ 
Flash 
Tool 

[0]

There are two bags of coins. You know the type and number of coins in one bag. You also know the total dollar amount in both bags. Can you find the number of coins in the mystery bag?
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MentalMath eXcitement

Mental math (Math 4)+ 
JavaScript 
Tool 

[1]

Mental math practice and competition. Covers addition, subtraction, multiplication, division, comparison, and "gap filling" (basic algebra). For registered users (registration free), results are dis...
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The Crazy Counting Machine

Mental math (Math 4)+ 
Flash 
Tool 

[0]

Can you reach the target number in as few clicks as possible? Makes use of doubling and halving strategies in working towards a target number.
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XP Math: Solving TwoStep Equa...

Mental math (Math 7)+ 
Flash 
Tool 

[1]

In this game, students race the clock to solve simple twostep equations.
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Euclid's Elements, Book I, Pro...

Midpoint formula (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition demonstrates how to bisect a finite straight line. The guide then examines the structure of the proposition. To reset the applet, press "r" while your cursor is over the diagram...
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MidPoint Theorem

Midpoint formula (Geometry)+ 
Java Applet 
Tool 

[1]

Students investigate what is so special about the midpoints of a triangle. They discover the midpoint theorem and can answer an exploration question.
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Midpoint of a Line Segment

Midpoint formula (Geometry) 
Flash 
Tool 

[0]

A Flash introduction to determining the midpoint of a line segment given the coordinates of its endpoints. College Cram charges access fees by the month or by the semester for most resources. To g...
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Midpoint of a line segment  ...

Midpoint formula (Geometry) 
Flash 
Tool 

[0]

An interactive applet and associated web page that demonstrate how to find the
midpoint of a line segment when the coordinates of the endpoints are given.
The applet has two points on a Cartes...
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What Is Meant By A Midpoint?

Midpoint formula (Geometry) 
Java Applet 
Tool 

[1]

This applet shows you what a midpoint is.
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DPGraph Viewer

Modeling and applications (Geometry) 
Computer 
Tool 

[0]

DPGraph Viewer allows you to view and manipulate 2D through 8D graphs created by the full version of DPGraph. DPGraph Viewer comes with hundreds of examples contributed by users from around the world.
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Dynamic Geometry Exploration: ...

Modeling and applications (Geometry)+ 
Java Applet 
Tool 

[0]

This sketch has an airplane with an engine velocity that can be changed by clicking on a button and then moving a point. It also has a button for wind velocity. After you adjust the engine and wind ...
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GRACE  Graphical Ruler and Co...

Modeling and applications (Geometry) 
Java Applet 
Tool 

[0]

Click on "start GRACE" towards the bottom of the page and experiment with the applet that appears. Links to a tutorial and userís manual are also towards the bottom of the page.
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Geomview

Modeling and applications (Geometry) 
Computer 
Tool 

[0]

Geomview is an interactive program written by the staff of the Geometry Center for viewing and manipulating geometric objects. It can be used as a standalone viewer for static objects or as a display ...
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Magen Relativistic Calculator ...

Modeling and applications (Geometry)+ 
Java Applet 
Tool 

[0]

The calculator uses an interactive geometric contstruction to solve the addition of velocities, time dilation, and other special relativity problems. This has the educational benefit of visually di...
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Integer Multiplication

Modeling integers (Math 5)+ 
Flash 
Tool 

[0]

Visual models show how integer multiplication can be thought of as repeated addition or subtraction. Investigate how the sign of the factors determines whether the product is positive or negative.
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Exponential Growth and Decay

Modeling, including exp. fcns. (Calculus) 
Java Applet 
Tool 

[0]

Experiment with the graphs of exponential functions.
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Exponential Growth and Decay

Modeling, including exp. fcns. (Calculus) 
Computer 
Tool 

[1]

RealMedia movies on exponential decay of radioactive material in rocks.
More: lessons, discussions, ratings, reviews,...

Population Modeling

Modeling, including exp. fcns. (Calculus) 
Java Applet 
Tool 

[0]

Experiment with different models for the population of the United States, and try to find constants that predict the real values.
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The Malthus and Verhulst Popul...

Modeling, including exp. fcns. (Calculus) 
Flash 
Tool 

[3]

An animation of a model for population growth: what happens to a population when resources are exhausted?
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