Symmetry

MrsK40 · Post by **MrsK40** » Fri Jan 23, 2009 3:43 pm

Does anyone have any suggestions for learning this skill? My 10 year old is good at maths but has a mental block about this ...

Guest55 · Post by **Guest55** » Fri Jan 23, 2009 5:57 pm

Practical work - use mirrors on the edge of a pattern.

http://www.mathsnet.net/cruncher/symmetry.swf

It's not perfect because it does not allow a shape that 'straddles' the mirror.

Copy patterns etc

For rotational symmetry - again do lots of examples -

http://www.subtangent.com/maths/flash/ors.swf

MrsK40 · Post by **MrsK40** » Sat Jan 24, 2009 6:14 pm

That's great, thanks, I'll give it a go and see what happens