For family home evening I read a story from the Friend about a man that joined the church because he sat next to a girl on a bus who recited all the articles of faith to him when he asked what mormons believe. I challenged the kids to learn them all and I told them I would take them out for a milkshake if they could learn all 13. I memorized them in primary and I still remember them. When I was a senior in high school I took a college history class. On the final exam, one of the essay options was on the history of mormons. Our professor was not LDS. I wrote quite a bit about the history and concluded with the 13 articles of faith. I aced the exam. About a week later the professor saw me in the hall and went on about how he has never read a more well researched and written final exam.