I was in the 5th grade too when it happened. However, it was never mentioned to the students at my elementary school, but I did notice that the teachers had acted rather weird that day. I didn't know what had happened until I got home from school that day and my mom had the television on (which was weird in itself since my mom NEVER watches tv) and I witnessed the replaying of the planes hitting the towers. I will never forget that day for as long as I live. I was only 10 at the time, but I understood exactly what it meant, not to mention the fear that went with it.