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There are 21 videos in this category and 0 videos in 0 subcategories.
Category Videos
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Not Right For WatchKnowLearn
Ages: 10 - 18
365 Views:
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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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Not Right For WatchKnowLearn
Ages: 10 - 18
319 Views:
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The students will be guided through the development of the 45-45-90 and 30-60-90 relationships. They will then apply those relationships to specific problems. Dig Deeper will develop their understanding of more difficult problems using the relationsh...ips.
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July 18, 2012 at 03:52 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
271 Views:
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Sal Khan demonstrates how to use a virtual protractor to measure angles in this four-minute video.
August 26, 2011 at 07:41 PM
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Not Right For WatchKnowLearn
Ages: 11 - 15
188 Views:
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How do you find unknown angles in a four-sided figure? Here is an example. (04:05)
October 21, 2012 at 09:46 AM
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Not Right For WatchKnowLearn
Ages: 8 - 18
928 Views:
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This two-minute video animation explains how to measure angles.
An angle is two rays that share a common endpoint. the common point is called the vertex. You can use a protractor to measure angles. Acute angles are less than 90 degrees. Right angle...s are 90 degrees, and obtuse angles are greater than 90 degrees but less than 180 degrees. This video explains this and uses excellent graphics. (02:11)
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July 22, 2011 at 02:29 PM
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Not Right For WatchKnowLearn
Ages: 10 - 15
944 Views:
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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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Not Right For WatchKnowLearn
Ages: 14 - 18
894 Views:
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Students learn the definition of an angle and the concept of measure, including the following vocabulary: side, vertex, protractor, degrees, right angle, acute angle, obtuse angle, and straight angle. (02:26)
February 1, 2010 at 09:15 PM
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Not Right For WatchKnowLearn
Ages: 16 - 18
876 Views:
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The instructor in this video demonstrates that an inscribed angle is half of a central angle that subtends the same arc. The instructor 'writes' using computer software. (14:16)
March 18, 2010 at 08:17 PM
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Not Right For WatchKnowLearn
Ages: 10 - 14
1223 Views:
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In this video, students are shown the protractor, what is on the protractor, and how it works. It discusses which numbers to use, the inside numbers or the outside numbers. It depends on which way the angle is facing. Then the narrator goes throug...h some examples. The instrument the narrator uses has movable lines, so students can see how to measure various sized angles. Video is good quality and good for elementary grade students.
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July 13, 2009 at 06:42 PM
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Not Right For WatchKnowLearn
Ages: 11 - 16
1637 Views:
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In this video, which was originally on TeacherTube, students will learn how to use and read a protractor. Instructor gives a brief review of angles. She uses computer software for the demonstration. (07:52)
February 1, 2010 at 09:09 PM
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