When teaching about rotations it is easy to rotate polygons, letters or numerals. To have your students investigate the degree of rotational symmetry, guide them to the “Learning MATH” lesson on Rotation Symmetry  and its associated flash learning object.

Alternatively (or in addition) you can download my Number Rotations worksheet to set for your class.

For example the triskelion on the Isle of Man flag (see image below), has three fold symmetry, that is it requires a rotation of 120 degrees to rotate back upon itself.



About webmaths

I have been teaching Mathematics in Victorian secondary schools for 30 years. I use the www to make my maths lessons better. I hope this blog will give other teachers some ideas to try in their own classes.
This entry was posted in Geometry, Teaching Ideas, Worksheets and tagged , , . Bookmark the permalink.

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