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Please go to the NON-FLASH version of Design Fractions with Number Line Models.


Identify with Number Line Models uses number lines to demonstrate the meaning of numerator and denominator.

The denominator tells the number of equal parts that make up a whole. The numerator tells the number of chosen parts. If you input 3 for the numerator and 4 for the denominator you will get a number line that is sectioned into 4 equal parts, 3 of them will be colored in (chosen).

You can input any fraction with a value less than 1. The denominator must be between 0 and 100. Press the <OK> button and the chosen fraction will appear.

On the left is a <SHOW COLOR> check box. Uncheck the box to turn off the arrow and the red selected part of the number line. This will allow the learner to select the fraction.

Uncheck the <EXPLAIN> check box to turn off the answer and the explanation.

With <SHOW INPUT> unchecked, the numerator and denominator input boxes will act the same as password input boxes so students will not see the numbers you input.


Demonstrate numerator with 3/5 and then 4/5. This will show that the fraction will increase in size as the numerator increases.

Demonstrate denominator with 3/5 and then 3/6. This will show that the fraction decreases in size as the denominator increases.

With <EXPLAIN> and <SHOW INPUT> unchecked you have the opportunity to ask the student to name the numerator and denominator from the fraction model.


You may copy the screen by pressing <Print Screen> on the keyboard. This copies the screen into Windows Clipboard™. The screen can then be pasted into Windows Paint™ or your favorite imaging program. Windows Paint™ will allow you to crop, printed or save the image.

Windows 7 users can use the Snipping Tool™ to capture any part of the screen you wish. These images can be edited and saved in PNG, GIF(recommended) or JPEG formats.