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Naming Fractions - A Virtual Manipulative
Name the fraction corresponding to the highlighted portion of a shape. There are more instructions to the right of the manipulative.  Activities can be found above the workspace. 
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Fractions - Parts of a Whole - A Virtual Manipulative
This virtual manipulative relates parts of a whole unit to written description and fraction. There are more instructions to the right of the manipulative.
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Fractions - Rectangle Multiplication - A Virtual Manipulative
Visualize and practice multiplying fractions using an area representation. Use this virtual manipulate to graphically demonstrate, explore, and practice multiplying fractions.
The grid shows two fractions multiplied together by showing one fraction in red on the left and another in blue on the bottom of a grid. The area of the overlapping region shown in purple is the product (result of multiplying) the fractions.
There are more instructions to the right of the manipulative.

Author(s): No creator set

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Fractions - Visualizing – A Virtual Manipulative
Illustrate a fraction by dividing a shape and highlighting the appropriate parts. There are instructions to the right of the manipulative.
Author(s): No creator set

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Percent Grids - A Virtual Manipulative
The Percent Grids applet is designed to reinforce the connection between percent notation and the 100’s grid representation. Click the radio buttons at the bottom to change which mode you are working in.
Author(s): No creator set

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Color Patterns-Virtual Manipulative
Using this virtual manipulative you may:

-Describe a color pattern
-Extend the pattern
-Fix a mistake
-Check your solution
-Generate a new pattern

Describe a color pattern
Starting from the upper left corner of the workspace, use your words to describe the sequence of colors.
Extend the pattern
Click on a button with a question mark and then click on the appropriate color to extend the pattern.

Author(s): No creator set

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Number Patterns - Virtual Manipulative
This virtual manipulative teaches recognition of number patterns.
Observe the initial numbers in a sequence and enter what you think remaining the remaining values in the pattern are. Click Check Answer to see if your answer matches the computer's answer.
Click New Problem to try a new number sequence.

Author(s): No creator set

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Sieve of Eratosthenes - Virtual Manipulative
This virtual manipulative displays a grid containing numbers from 2 to 200. You can use it to explore patterns and relationships involving multiples.
Using this virtual manipulative you may:

-Remove multiples of a number
-Show multiples of numbers
-Reset the workspace
-Choose how many rows to display

Author(s): No creator set

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Complete the Pattern - A Virtual Manipulative
Describe a color pattern
Starting from the upper left corner of the workspace, use your words to describe the sequence of colors.
Extend the pattern
Click on a button with a question mark and then click on the appropriate color to extend the pattern.
Fix a mistake
If you make a mistake, click on the button with the wrong color to blank out the wrong color and then click on the color you want instead.
There are m

Author(s): No creator set

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Pattern Blocks - A Virtual Manipulative
Use six common geometric shapes to build patterns and solve problems.

Using this virtual manipulative you may:
-Add a block to the workspace
-Rotate a block
-Change the color of a block
-Remove a block
-Group blocks
-Clone a block
-Clear the workspace
There are more instructions to the right of the manipulative.  Activities can be found above the workspace. 

Author(s): No creator set

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Block Patterns – A Virtual Manipulative
Block Patterns – Analyze sequences of figures using pictures, tables, plots, and graphs. There are more instructions to the right of the manipulative.
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Number Line - Virtual Manipulative
This virtual manipulative can be used to picture whole number operations: addition, subtraction, multiplication and division, carried out on a number line. There are more instructions on the right side of the Java applet.
Author(s): No creator set

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Number Line Bars - Virtual Manipulative
This is a versatile tool that can be used to illustrate a variety of number operations. The background of the workspace is marked by light gray grid lines. The default step-size of the grid lines is 1 unit.  There are more instructions on the right side of the Java applet.
Author(s): No creator set

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Number Line Bars - Fractions - Virtual Manipulative
This is a very versatile tool that can be used to illustrate a variety of number operations. The background of the workspace is marked by light gray grid lines. The default step-size of the grid lines is 1/10 unit. There are more instructions on the right side of the Java applet.

Step size

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Number Line Bounce - Virtual Manipulative
This virtual manipulative can be used to visualize a sequence of operations on a number line and to create number sentences representing the operations. There are more instructions on the right side of the Java applet.
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The Place Value Number Line - Virtual Manipulative
A number line is a common representation of integers used to teach concepts of positive and negative numbers, zero, place-value, and arithmetic operations. The Place Value Number Line manipulative is designed to introduce, practice, and test skills in representing place value on a number line. There are instructions on the right side of the Java applet.
Author(s): No creator set

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Rectangle Division - Virtual Manipulative
Use this virtual manipulate to explore and practice division using pictures.
The grid shows a big number divided by a little number. The big number is the total number of blue and red blocks. The little number is the height of the blue rectangle. The number of red blocks is the remainder left over when the big number is divided by the little number

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Rectangle Multiplication - Virtual Manipulative
This virtual manipulative allows the user to visualize the product of two factors in three different ways: click on any of the options below the array to choose Grouping, Common, or Lattice. There are more directions on the right side of the Java applet
Author(s): No creator set

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Factor Tree - A Virtual Manipulative
Factor numbers using a tree diagram. 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 Greatest Common Factor (GCF) of the two given numbers.
There are more instructions to the right of the manipulative.

Author(s): No creator set

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Spinners - Virtual Manipulative
This virtual manipulative can be used to teach about chance and random choices. You may:

-Spin the spinner
-Change spinner regions (Name, Color, and Size)
-Record results from multiple spins
There are more directions on the right side of the Java applet.

Author(s): No creator set

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