Snowflakes have symmetry. See if you can make symmetrical snowflakes in this matching game.
http://pbskids.org/sid/fablab_snowflakematch.html
Use the following websites to create beautiful snowflakes: http://www.create-a-snowflake.com/ http://snowflakes.barkleyus.com/ http://akidsheart.com/holidays/winter/snowflake.htm