4.MD.6. Measure angles in wholenumber degrees using a protractor. Sketch angles of specified measure.
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Ages: 10  18
2986 Views:

An interactive that allows students to measure angles using a protractor. Identify angles that are acute, obtuse, right, straight or reflexive.
July 17, 2012 at 02:43 PM


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Ages: 9  14
3499 Views:

First it is established that triangles have sides and are measured by interior angles. They belong to categories based on that. The acute triangle is defined, illustrated and explained. There are many exercises helping students remember the attribute...s of Acute triangles as distinguishable from other triangles. Students will use an interactive protractor for practice to correctly measure interior angles to distinguish acute triangles from others.
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June 13, 2012 at 11:14 PM


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Ages: 10  15
2772 Views:

The instructor uses an electronic sketchpad to demonstrate how to constucut angles. Video discusses vocabulary and symbols associated with angles, ray (sides of the angle), vertex (the point where the rays start). It then goes on to use the protrac...tor to measure an angle. It starts with where to put one line of the angle and then where and what to measure. It also instructs students which set of numbers to use on a protractor. Then examples are measured. Good video for instruction and review for any grade level. (06:19)
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July 13, 2009 at 06:46 PM


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Ages: 18  18
15330 Views:

Review appropriate notation for angle measurement, and describe angles
in terms of the amount of turn. Use reasoning to determine the measures
of angles in polygons based on the idea that there are 360 degrees in a
complete turn. Learn about the r...elationships among angles within
shapes, and generalize a formula for finding the sum of the angles in
any ngon. Use activities based on GeoLogo to explore the differences
among interior, exterior, and central angles.
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March 8, 2010 at 01:19 PM


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Ages: 9  16
2415 Views:

The instructor uses a protractor, pen, and paper to demonstrate how to use a protractor to measure angles. (01:44)
October 20, 2009 at 04:38 PM


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Ages: 9  15
2669 Views:

Learn about what a protractor is, and how to use it to draw angles in this simple instructional video. (02:41)
June 4, 2009 at 12:52 AM


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Ages: 6  12
1751 Views:

This media asset demonstrates how to use a protractor for measuring angles. After the introduction, you can select from 10 different online activities for measuring angles. These activities are designed to be used on whiteboards or computer monitor...s.
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November 28, 2010 at 07:58 PM


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Ages: 12  16
1117 Views:

This short video demonstrates how to use a protractor to measure the degree of an angle with stepbystep instructions. (1:40)
January 29, 2011 at 10:39 PM
