Firemen Visit

Yesterday Firemen came to visit, to go over what you have to do in a fire and smoke detector stuff. First the said there names and then the told us what to do in the fire, you have to get low, and when your on fire you roll on grass. Then we did a drill of what to do when the fire alarm, you crawl on the ground and get to safety. Then once they left, my teacher told us the fire triangle, it's what you need for a fire. You need fuel source, something to light it and oxygen. When I said that when your on fire you roll on grass, it's called: Stop drop and roll and you do that because the oxygen runs out when you do that.  Have you ever herd of the fire triangle and have you had a fire fighter visit?