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Technology 
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Time Card Calculator

Time (Math 3) 
Java Applet 
Tool 

[1]

A calculator designed to teach time. Helps students calculate time elapsed. Site also contains many Excel templates to help calculate time, as well as instructions on how to convert hours and minutes ...
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Towers of Hanoi

Patterns and sequences (Math 3) 
Java Applet 
Tool 

[3]

Solve the tower problem and test your theory by varying the number of disks.
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Triominoes

Geometry in the plane (Math 3) 
Java Applet 
Tool 

[0]

Manipulate the puzzle pieces and find multiple solutions.
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Turtle Geometry

Geometry in the plane (Math 3) 
Java Applet 
Tool 

[1]

Move and turn a turtle.
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Turtle Rectangles

Symmetry (Math 3) 
Java Applet 
Tool 

[1]

Change variables to observe differences in spiral designs.
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Types of Triangles

Classify geometric objects (Math 3) 
Java Applet 
Tool 

[4]

This JavaSketchpad applet accompanies the tPoW, Types of Triangles. Students are able to drag and manipulate four triangles and by noticing what happens they classify the triangles as either scalene, ...
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Virtual Paper Cut and Fold

Symmetry (Math 3) 
Java Applet 
Tool 

[2]

Learn how to make snowflake patterns and create a fivepointed star. The interactive site offers both a Flash tool and a faster, more fullyfeatured Java applet that allows you to save the snowflakes ...
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eNLVM  Interactive Online Mat...

General (Math 3) 
Java Applet 
Tool 

[2]

The eNLVM enhances the applets available through the National Library of Virtual Manipulatives (NLVM). It allows teachers to embed applets in lessons, make up questions to which students can submit an...
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Adding and Subtracting Decimal...

Adding decimals (Math 3)+ 
JavaScript 
Tool 

[5]

The user reviews how to add and subtract decimal numbers. After viewing examples, users can interactively practice adding and subtracting the decimal numbers given.
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Addition Worksheets

Addition (Math 3) 
JavaScript 
Tool 

[0]

A script which allows control over generating positive whole number addition problems of various selectable lengths.
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Base 10 Addition Mathlets

Operations with numbers (Math 3)+ 
JavaScript 
Tool 

[0]

The idea for the one, two, and three place addition mathlets is to show the steps in the base ten addition procedure in conjunction with a model. Each time the mathlet is run (by clicking the "New" b...
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Base 10 Subtraction Mathlets

Operations with numbers (Math 3)+ 
JavaScript 
Tool 

[0]

These mathlets illustrate the standard base 10 subtraction algorithm. They provide randomly generated subtraction problems with up to 4 decimal places and allow the student to step through the solutio...
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Birmingham Grid for Numbers (P...

Place value (Math 3) 
JavaScript 
Tool 

[0]

Use this tool to reinforce students' understanding of place value. Students choose values from groups of units, tens, and hundreds, or decimal values, to reach the target number. Versions of this acti...
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Chron me!

Time (Math 3) 
JavaScript 
Tool 

[0]

Chron me! is an online stopwatch. You may use it to just time a specific activity or monitor your daily tasks. Versions available include full, mini, and blogfriendly widget.
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Coin Flip Application

Collect data (Math 3)+ 
JavaScript 
Tool 

[0]

The Coin Flip Generator is a lightweight online coin flip generator. Click "Flip Coin" to get started  "H" means heads, "T" means tails. Flips you've already made will appear below the coin. The app ...
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Cryptarithms

Operations with numbers (Math 3)+ 
JavaScript 
Tool 

[1]

Cryptarithms are brain teasers obtained when digits in numerical calculations have been replaced by letters. Customarily, distinct letters stand for different digits. Another term, Alphametics, denote...
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Estimating and Rounding Decima...

Rounding (Math 3)+ 
JavaScript 
Tool 

[1]

The user reviews how to estimate and round off whole and decimal numbers. After viewing examples, users can interactively practice rounding the given numbers to specific place values.
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Fraction Calculator

Fractions (Math 3) 
JavaScript 
Tool 

[0]

A fraction calculator that includes written stepbystep guides to adding, subtracting, multiplying and dividing fractions.
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Fraction Definitions

Writing fractions (Math 3)+ 
JavaScript 
Tool 

[0]

The user reviews the rules for converting mixed numbers to fractions. After viewing examples, users can interactively practice converting mixed numbers to an improper fraction and finding its reciproc...
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Fraction Model I

Fractions (Math 3) 
JavaScript 
Tool 

[0]

This tool explores several representations for fractions using adjustable numerators and denominators. You can see decimal and percent equivalents, as well as a model that represents the fraction. Thi...
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Fraction Wheel Mathlets

Fractions (Math 3) 
JavaScript 
Tool 

[0]

Three mathlets using fraction wheels to illustrate addition and multiplication of fractions. The mathlets are implemented in Java Script and should run on any up to date web browser. They display the...
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How Much Pizza to Order?

Equivalent fractions (Math 3) 
JavaScript 
Tool 

[0]

The program raises the problem from a hypothetical party where the guests ask for a specific fraction of pizza. Guests can only choose two types of pizza for each party. The program calls for the tota...
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Kilograms to Pounds

Weight/mass (Math 3) 
JavaScript 
Tool 

[0]

Online conversion tool to convert from the weight unit of kilogram to the weigh unit of pounds.
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Marble Mania!

Probability (Math 3) 
JavaScript 
Tool 

[1]

This is an interactive activity in which the randomness and probability of marbles being pulled out of a "bag" are calculated automatically and for trials up to 500. In short, students will be able...
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Math Cats Balance

Weight/mass (Math 3) 
JavaScript 
Tool 

[0]

You can choose from a wide range of objects to place on this scale  from electrons to galaxies! Click the arrow next to "thin cat" and scroll up and down the object lists to see all the choices.
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