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Tool: Number Line App
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Go to: http://education.ti.com/us/product/apps/numline.html (opens a new window)
Description: With the Number Line App, students are able to see a dynamic, visual representation of a number line while adding and subtracting whole number and integers using arrow diagrams (vectors) and arithmetic updates of the expression. The fraction line, a double-sided number line, is an excellent way to build skills in comparing decimal, fractional and percentage forms.

For step-by-step instructions on how to download and use TI apps in general, visit this page on the TI site:
http://education.ti.com/us/product/apps/howtoget.html

Technology Type: TI-73 Explorer 
Guide: User's Guide (opens a new window)
Author: Texas Instruments
Language: English 
Cost: Does not require payment for use

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Activities: Walking the Line: Activities for the TI-73 Number Line App
Addition and Subtraction
Courses: Math 4 Operations with numbers, Fractions, Integers
Math 5 Operations with numbers, Fractions, Integers
Math 6 Operations with numbers, Fractions, Integers
Math 7 Operations with numbers, Fractions, Integers