September 11, 2001, is a tragic day in the minds and hearts of Americans and many others around the world. Remembering September 11 introduces students to the events of that day in an age-appropriate manner. It also discusses how Americans remember and mark September 11 as a day of mourning and includes information on what has been done across the country and around the world to honor those who died and those who tried to save them.September 11, 2001, is a tragic day in the minds and hearts of Americans and many others around the world. Remembering September 11 introduces students to the events of that day in an age-appropriate manner. It also discusses how Americans remember and mark September 11 as a day of mourning and includes information on what has been done across the country and around the world to honor those who died and those who tried to save them.