How do we teach our children about 9/11?

I don't think it is necessary to teach about 9/11 because terror attacks have been going on in America for hundreds of years and nothing has been said about it. I think we should be teaching more about unification America between Americans. Also, I feel that we should be rewriting History books to include complete and truthful history of the making and controlling of America, rather than beating up on Muslims and one of the thousands of terror acts that happened in America!

Tell them the truth. Islamic terrorist attacked us and will continue to attack us until we conform to an Islamic nation.

I saw the second plane impact the World Trade Center as it happened. I was dumbfounded. The truth had yet to dawn on me that the first collision was deliberate. It was at this point it became clear the enemy were determined to strike at us at our homeland and do so with great effectiveness. Even before September 11th, 2001, I've followed unconventional warfare specifically because the enemy we face know that they can't beat us on the ground or the air, or at sea. When next they strike, the weapons they use will be terror weapons, whether more abuse of large vehicles or weapons of mass destruction.
The lesson needs to be based on facts. A war was declared on this country. It is being waged by people who are justifying their actions based on their religion. Prominent clerics in one of the two major schools of Islam, who live in what amounts to a dictatorship in which heretical opinions are not allowed to be voiced, have stated that the United States deserved to have five thousand people die in a single day. Yet, for reasons many do not understand, we sell this country powerful weapons and we buy their oil. This country is Saudi Arabia.
Fifteen of the hijackers who took US aircraft over, crashed two of them into the World Trade Center, one into the Pentagon, and would have crashed one into the White House had it not been for brave American passengers on that plane who made the ultimate sacrifice for their country were from that country. Yet, Saudi Arabia is not only not punished for this, the Federal Government has so far protected them from families of the victims of its citizens' acts of terror in court - even though prominent members of the Saudi royal family were among the people who funded the attacks. Obviously there are those in the Federal government who aren't entirely committed to winning this war.
The lesson is that we're in a war against a real threat to our nation. We cannot afford to relent in our defense against this threat. We cannot afford politicians who are less than totally opposed to the threat.
https://www.youtube.com/watch?v=OoyiPdEhJh4 and the other installments in "Why We Fight Now: In the Global War on Terror" show what happened, and why we're responding to that attack as we are doing. It gives our defense against terror a human face.
The message ought to be "We didn't start this fight. We intend to finish it."