Here is a wonderful series of lesson plans that use celery to faciliate all sorts of learning. By the end of the lessons, youngsters should know how celery is grown, how celery is used in homes and restaurants, and they will understand that a plant's stem supports the plant while providing a pathway for its water. There are all sorts of wonderful activities in these lessons, including the famous activity where different colored water is used to show how water travels up the celery stem. Terrific!