Symmetry is an important math and spatial awareness skill. Your child can develop this skill while drawing, painting, and playing. While drawing, fold (or have your child fold) a piece of paper so that the fold divides the paper in half vertically. You can help your child make one butterfly wing on one side of the fold. He or she can then decorate the wing in any way desired. Now ask your child to copy or match that decorated wing as exactly as possible on the other side of the fold. He or she may need your help to draw the other wing. When your child has finished the butterfly, explain that the sides match and have symmetry.
Try this same procedure with simple shapes, such as circles, squares, and triangles. Your child can draw the decorations or glue on pieces of paper or stickers. The complexity of the decorations will depend on your child's ability, which will grow with practice.