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Ask Dr. Math FAQ: Prime Number...

Number theory (Math 3) 
Java Applet 
Support Material 

[0]

Answers to the frequently asked questions including: What is a prime number? How can you find prime numbers? What's the Sieve of Eratosthenes? What's the largest known prime?
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Ask Dr. Math: FAQ: Learning to...

Factor (Math 3) 
Java Applet 
Support Material 

[1]

Students regularly ask Doctor Math questions about how to factor. Here are some answers from the archives.
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Color by Numbers

Number theory (Math 3) 
Sketchpad 
Tool 

[0]

Students investigate patterns produced on a grid of numbers generated through addition and multiplication of the whole numbers. The focus is on elementary number theory concepts such as even/odd, fact...
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Everyday Mathematics® Divisibi...

Divisibility tests (Math 3)+ 
iPad 
Tool 
$ 
[0]

This game offers a way to practice recognizing multiples of a number and applying divisibility tests. Players are presented with a target divisor and number globes in the playing area. They click the ...
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Factor POP!!

Factor (Math 3)+ 
iPhone 
Tool 

[0]

Factor POP! challenges users to utilize math skills and quick fingers. Buttons scroll across the screens at a chosen speed, and the user has to pop the buttons that are multiples or factors of the cho...
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Factor Table

Factor (Math 3) 
Flash 
Tool 

[0]

Is the number in a row a factor of the number heading a column? If so, drag its cofactor into the given square; if not, drag the red X. Click a square to see the two numbers; click again to see a vis...
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Factor Tree

Factor (Math 3) 
Java Applet 
Tool 

[10]

This manipulative allows you to construct factor trees (to the prime factors) for two numbers, and then from the prime factorization, you are asked to identify the Least Common Multiple (LCM) and the ...
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Factorgram

Prime factorization (Math 3) 
Flash 
Tool 

[0]

Drag prime numbers into the diagram to see if they are factors of the given number. Numbers you have tried so far will be listed to the right of the diagram.
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Factorizar

Factor (Math 3) 
Java Applet 
Tool 

[0]

Aprenda sobre factores construyendo arreglos rectangulares en una cuadrícula.
versión en inglés
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Factorizar 2

Factor (Math 3) 
Java Applet 
Tool 

[0]

Aprenda sobre factores construyendo arreglos rectangulares en una cuadrícula.
versión en inglés
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Factorize

Factor (Math 3) 
Java Applet 
Tool 

[2]

Learn about factors through building rectangular arrays on a grid.
Spanish version also available.
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Factorize 2

Factor (Math 3) 
Java Applet 
Tool 

[0]

Learn about factors through building rectangular arrays on a grid.
Spanish version also available.
More: lessons, discussions, ratings, reviews,...

Flash Math

Multiple (Math 3) 
Flash 
Tool 

[6]

In a game context students select a sequence of numbers using the "rule" stated for that game. There are three levels that a user can choose including easy, medium, or hard.
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Grouping I and II

Number theory (Math 3) 
Sketchpad 
Tool 

[0]

Grouping I: The goal of this activity is twofold. First, it introduces students to Sketchpad's most important tools and menu commands. Second, it helps students appreciate how grouping objec...
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HandsOn Math Hundreds Chart

Prime (Math 3)+ 
iPad 
Tool 
$ 
[0]

HandsOn Math: Interactive Hundreds Chart creates a virtual math playground where students explore, investigate and discover mathematical concepts. Students use colored markers on the Interactive H...
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Highest Common Factor

Factor (Math 3)+ 
Computer 
Tool 
$ 
[0]

Students write the greatest common factor of two given integers in this alterable worksheet. Fee required to print; see this page for details.
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Jump Along

Number theory (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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Lowest Common Multiple

Multiple (Math 3)+ 
Computer 
Tool 
$ 
[0]

Students write the lowest common multiple of two given integers in this alterable worksheet. Fee required to print; see this page for details.
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Math Game 2 Players

Prime (Math 3) 
iPad 
Tool 
$ 
[0]

This app is designed for 2 players and includes 8 math games:
 Make arrays by rolling dice! ( Area dice game )
 Coordinate Plane
 Place Value
 Addition bomb game
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Math Garden

Prime (Math 3)+ 
Android 
Tool 

[0]

In this app, the natural numbers are represented as plants:
If two unseeded seeds overlap, they add up.
If two seeds are planted, the plants multiply.
The plants are structured in branc...
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Multiples and Factors

Factor (Math 3)+ 
JavaScript 
Tool 

[2]

Review knowledge of multiples and factors through practice worksheets, fact sheets, and a threelevel quiz. A page for instructors gives UK curricular alignments and other useful web sites for teachin...
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Odd or Even

Number theory (Math 3) 
Flash 
Tool 

[0]

Drag and drop the number tiles to their correct position on the Venn diagram.
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Primitives

Prime (Math 3)+ 
Flash 
Tool 

[2]

Primitives is a small Flash application for visualizing numbers in terms of their prime factors.
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Product Game

Factor (Math 3)+ 
Java Applet 
Tool 

[1]

The Product Game is a fun interactive game that exercises the users' skills with factors and multiples.
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Resources for Interactive Whit...

Number theory (Math 3)+ 
Flash 
Tool 

[2]

These simple maths resources for interactive whiteboards emphasize student differentiation and progression. All activities are linked to a key objective/objectives from the UK's Primary Framework. ...
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