The student saw a sign in the middle of the street while riding their bike one day. They had an idea for a story where they and two friends saw a car speeding dangerously near a little girl crossing the street. Later, in class the student asked if their students knew common traffic signs, and they answered "no." So the student prepared a simulation activity where students pretended to drive cars and had to obey signs the teacher showed them or receive infractions. The activity aimed to teach students the importance of traffic signs for safety on roads.