ProcedureBeginning with one side of the board all yellow, turning over plugs so they are blue side up can create many patterns with line symmetry. Allow the children to explore as individuals or in groups. Encourage recording on Poly Plug Paper. How many different symmetric patterns can the class find? Find a way to make a class display of them all. Coloured sticky dots on a photocopied outline of a Poly Plug Frame works well.Children can make a symmetric pattern for their partner to copy. A variation is for Child A to make a symmetric pattern and show it to Child B for an agreed time, say 30 seconds, before it is hidden. Child B is then challenged to recreate the pattern from memory. Four children who combine their boards can make more extensive symmetric patterns. Try all the same ideas again with rotational symmetry. See the activity Rotation Challenges.
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