Don't count your chickens before they hatch

Posted by Will on September 03, 2005

Hello. My sister used to ask you questions when she was in 4th grade. Now I'm in 4th grade and I have the same teacher. She asked us where the phrase - Don't count your chickens before they hatch came from, but I want to know what it means! Thank you very much. Will from Mrs. Morrissey's class