Rotational Symmetry
http://homepage.ntlworld.com/john-paul.g/swf/rsymmetry.swf
Click the play button to watch the shape rotate 360 degrees. As it turns, count how many times it fits back onto itself (bottom box) to give its order of rotation (top box).After seeing the first couple, a class should be able to do the rest on their own, possibly as a test. Currently contains 14 shapes.
- Topics:
- Space and Geometry, Symmetry
- Type:
- Activity, Demonstration, Flash, IWB, Projector
- NSW 7-10 Syllabus:
- SGS Space and Geometry, SGS3.2a Two-dimensional Space, SGS4.3 Properties of Geometrical Figures
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Links
This link, Rotational Symmetry: http://homepage.ntlworld.com/john-paul.g/swf/rsymmetry.swf
Give to students: http://gomaths.net/1511
This link on MathsLinks: http://mths.co/l/1511
MathsLinks: http://mathslinks.net