A couple of weeks ago we were doing a page about being an Olympic athlete
One of the things the students needed to fill in was their birthday. Being that it was a bunch of grade 1 and 2 students I directed them to the birthday chart in their classroom for those of them that either didn't know when their birthday was or weren't sure how to spell the month.
"But Mrs. my birthday is changing this year" says one little boy
Which is when I informed them that their birth day never changes... the date of their birthday parties however, might.