Two Things:
1) If you were in 4th/5th grade, I'm assuming you are still at KSU. Take Apprication of Architecture. At the end of the semester he spends 2-3 class periods going over the architecture of the buildings impact on the outcome.
2) I was a senior in HS when it it. My high school had a 8-foot TV hanging on a wall 10 feet off the ground over a large commons area. Right after the 1st one hit a teacher took his class to the commons, grabbing every other class they passed along the way. I saw the 2nd plane hit and there were around 100 people watching. By the time the 1st tower fell there were 300 people watching the news and we all watched it fall live. The most surreal experience I've ever been a part of. There was a large, collective gasp then just stunned silence.