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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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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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Touch Natural Numbers

Prime (Math 3)+ 
Android 
Tool 

[0]

With this app you can:

Factorize

Factor (Math 3)+ 
Computer 
Tool 

[0]

With this activity, you can visually explore the concept of factors by creating rectangular arrays. The length and width of the array are factors of your number.
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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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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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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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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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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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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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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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Sliding Factors

Factor (Math 3) 
Flash 
Tool 

[0]

In this game, drag a tile onto an adjacent tile of which it is a factor, and "capture" the second tile. Tiles can be dragged to empty spaces. Try to clear the board.
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Venn Diagrams

Number theory (Math 3) 
Flash 
Tool 

[0]

This drag and drop Venn Diagram simulation lets students solve a mathematical problem based on number properties using a range of different Venn diagrams. There are 5 different levels involving a rang...
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XP Math: King Kong's Prime Num...

Prime (Math 3)+ 
Flash 
Tool 

[0]

In this whackamole variant, click on King Kong if he appears holding a prime number, or lose a point if you click on him when he's holding a composite number.
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XP Math: Number Catch

Multiple (Math 3) 
Flash 
Tool 

[0]

Move the glove left or right to catch only multiples of two.
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XP Math: Wheel of Fortune: Num...

Number theory (Math 3) 
Flash 
Tool 

[0]

Play Wheel of Fortune to guess the phrase relating to numbers and operations.
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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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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.
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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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Sieve of Eratosthenes

Number theory (Math 3) 
Java Applet 
Tool 

[0]

This virtual manipulative displays a grid containing numbers from 1 to 200. You can use it to explore patterns and relationships involving multiples.
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