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Tool: Using a Protractor, animated demo - Math Open Reference
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Go to: http://www.mathopenref.com/constmeasureangle.html (opens a new window)
Description:

An interactive applet and associated web page that provide step-by-step animated instructions on how to measure angles using a protractor. Specifically, the applet uses a protractor to measure two angles that form a vertical pair, verifying they have the same measure.

The animation can be run either continuously like a video, or single stepped to allow classroom discussion and thought between steps.

Has link to a printable worksheet with related angle measurement problems. Suitable for class handout or homework.

Applet can be enlarged to full screen size for use with a classroom projector. After use in the classroom, student can access it again from any web browser at home or in the library with no login required.

This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Technology Type: Java Applet 
Author: John Page
Language: English 
Cost: Does not require payment for use

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Courses: Geometry Angles

Teacher Review (Not based on classroom experience)
Reviewer: Aunt Meg, Dec 4 2006 12:02:30:510PM
Appropriate for: introduction to a concept
Ability to meet my goals: Neutral
Recommended for:
Math 3: Geometry in the plane
Math 4: Geometry in the plane
Math 5: Geometry in the plane
Read the full length reviews for this resource