This is not really a post...just a thought. If you are looking for some math ideas this week that blend in the holiday spirit, visit www.mathwire.com. I was able to find an activity using the 12 Days of Christmas and Pascal's triangle patterns. The site also recommends math holiday books for the upper grades (such as Snowflake Bentley).
Happy holidays to all!
Look for another post tomorrow on my favorite picture book published in 2008.