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Technology 
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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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Big Blue Calculator

Operations with numbers (Math 3)+ 
Flash 
Tool 

[1]

Use the Big Blue Calculator on an interactive whiteboard to show students how the calculator works. The display can be hidden using the button at its lower left corner.
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Bowling

Operations with numbers (Math 3)+ 
Excel 
Tool 

[0]

Students learn to calculate their bowling score.
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Broken Calculator

Operations with numbers (Math 3)+ 
Flash 
Tool 

[2]

Eric's calculator has lost most of its keys. Can you find a way for the leftover keys to generate the target numbers?
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Caesar Cipher

Operations with numbers (Math 3)+ 
Java Applet 
Tool 

[0]

Students practice simple arithmetic skills by encoding and decoding messages using an affine cipher.
Spanish version also available.
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Caesar Cipher II

Operations with numbers (Math 3)+ 
Java Applet 
Tool 

[0]

Students practice simple arithmetic skills by encoding and decoding messages to determine the form for an affine cipher.
Spanish version also available.
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Caesar Cipher III

Operations with numbers (Math 3)+ 
Java Applet 
Tool 

[0]

Students practice their reasoning and arithmetic skills by decoding messages to determine the form for an affine cipher.
Spanish version also available.
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Capture Board Game

Operations with numbers (Math 3)+ 
Flash 
Tool 

[0]

The goal of this game is to clear the board. Tiles may be dragged the number of spaces shown on their face, and in the directions indicated by the crosshairs.
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Clock Arithmetic

Operations with numbers (Math 3)+ 
Java Applet 
Tool 

[1]

Students learn about modular arithmetic operations through working with various types of clocks. Parameters: Number of hours on the clock.
Spanish version also available.
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Clock Arithmetic on a 10hour ...

Operations with numbers (Math 3)+ 
Java Applet 
Tool 

[0]

On a 10hour clock, there are only 10 numbers in the whole number system. However, every number has lots of different names. For example, the number before 1 is 0, so 10 = 0 on a 10hour clock.
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Clock Arithmetic on a 12hour ...

Operations with numbers (Math 3)+ 
Java Applet 
Tool 

[0]

On a 12hour clock, there are only 12 numbers in the whole number system. However, every number has lots of different names. For example, the number before 1 is 0, so 12 = 0 on a 12hour clock.
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Clock Arithmetic on a 2hour c...

Operations with numbers (Math 3)+ 
Java Applet 
Tool 

[0]

On a 2hour clock, there are only 2 numbers in the whole number system. However, every number has lots of different names. For example, the number before 1 is 0, so 2 = 0 on a 2hour clock.
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Create your own Math Quiz

Operations with numbers (Math 3)+ 
Computer 
Tool 

[1]

Use the menus and text boxes to create your own quizzes on addition, subtraction, multiplication, and division  or browse from among a selection. Click the appropriate button to reveal answers, grad...
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Cryptarithms

Operations with numbers (Math 3)+ 
JavaScript 
Tool 

[2]

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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Digitron Lite

Operations with numbers (Math 3)+ 
iPad 
Tool 

[0]

This game exercises math skills by asking players to quickly combine numbers and operators to solve common arithmetic problems. Operators can be changed by tapping on screen, which cycles them in the ...
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El cifrado de César

Operations with numbers (Math 3)+ 
Java Applet 
Tool 

[0]

Los estudiantes practican aritmética sencilla codificando y decodificando mensajes mediante un cifrado afín.
versión en inglés
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El cifrado de César II

Operations with numbers (Math 3)+ 
Java Applet 
Tool 

[0]

Los estudiantes practican aritmética sencilla codificando y decodificando mensajes para determinar la forma de un cifrado afín.
versión en inglés
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El cifrado de César III

Operations with numbers (Math 3)+ 
Java Applet 
Tool 

[0]

Los estudiantes practican sus habilidades matemáticas y de razonamiento mediante la decodificación de mensajes para determinar la forma de un cifrado afín.
versión en inglés
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Electronic Abacus Applet

Operations with numbers (Math 3)+ 
Java Applet 
Tool 

[0]

This applet explores the use of an abacus model for representing numbers and for performing addition.
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Jump Along

Operations with numbers (Math 3)+ 
Sketchpad 
Tool 

[1]

This activity involves a number line along which students observe consecutive jumps, controlling both the number of jumps and jump size. This sketch can be used to model basic questions involving the ...
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KENKEN Classic II (for Android...

Operations with numbers (Math 3)+ 
Android 
Tool 

[0]

KenKen is a gridbased logic puzzle and math game. For a 3x3 puzzle, use the numbers 13; for a 4x4 puzzle, fill in with numbers 14; for a 5x5 puzzle, use the numbers 15, and so on. Do not repeat a ...
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KenKen Classic (for iPhone, iP...

Operations with numbers (Math 3)+ 
iPad 
Tool 
$ 
[0]

KenKen challenges you to complete a grid without repeating a
number in any row or column. The catch? The numbers in each
heavily outlined set of squares must combine to produce the
target number in...
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Magic Square Java Applet

Operations with numbers (Math 3)+ 
Java Applet 
Tool 

[0]

Slide each number to fill one of the squares so that the sum of the columns and rows equal the same number. Start with a 3 x 3 square and then try a 4 x 4 and a 5 x 5. Originally written in 1996, you ...
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Math Stars (Macintosh)

Operations with numbers (Math 3)+ 
Computer 
Tool 

[1]

Practice addition, subtraction, multiplication, and division facts to earn math stars. Shareware $7. Site license $50. Registration documents included with the download.
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Math Stars (Windows)

Operations with numbers (Math 3)+ 
Computer 
Tool 

[1]

Practice addition, subtraction, multiplication, and division facts to earn math stars. Shareware $7. Site license $50. Registration documents included with the download.
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