Flowers and American flags are arranged on the north pool of the National September 11 Memorial during a ceremony marking the 10th anniversary of the attacks at the World Trade Center, Sunday, Sept. 11, 2011.
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Looking Back: The Nation Reacts to the 9/11 Attacks
The Sept. 11 museum at ground zero is offering a hand on planning commemorations elsewhere as the anniversary of the terror attacks approaches.
The National September 11 Memorial & Museum released a remembrance guide online Monday. The guide includes a list of the nearly 3,000 victims of the attacks, interactive timelines, lesson plans about memorialization and ideas for sharing reflections through social media.
Many communities already hold their own commemorations. The museum says it gets requests from groups seeking the victims' names, educational materials or other information. So organizers say they decided to make their resources more easily available.
Almost 4.5 million people have visited the outdoor memorial since it opened last September. The accompanying museum was originally set to open this September but has been delayed amid a financial disagreement.