Further Investigations Into Symmetry

During Choice Time some of the children decided to make symmetrical designs with our pattern blocks.  After Gym class, we explored more design possibilities using colored squares.  Each child began creating a symmetrical mosaic design.   To accomplish this task, they needed to understand the concept of the midline that divides a symmetrical object into its mirror images.  Here is an example of the reasoning involved - "If I put a red square 2 spaces from the midline on the left side, then I have to put a red square 2 spaces from the midline on the right, opposite the other red square."