I have been putting together the finishing touches on our day, so I thought I would share. If you would like the PDF file which includes the words for alphabetizing, the algebra problems (two pages--one is easier, one more challenging), and a matching game for words with the prefix ex-, you can access it below.
Also, I found this website with lots of good information for kids. http://leapyearday.com/content/kids-page
Have a Happy Leap Day! You don't get too many extra days--so ENJOY!