Social Studies and Math? Who knew

While tutoring my 7th grade girls this year we completed a calendar project to review order of operations and expressions.  I really liked it (I would hate to grade it) but thought it was a good project.  Well a teacher at one on my school's, Ms. J. made the students place holidays from different countries on their calendar!  HOW COOL?  I told my other school about it and they are going to use it for the 3 major religions.  Love it. Use it. Amazing.