(Courtesy Jewell Parker Rhodes)

The "Falling Towers" cover.

(Courtesy Jewell Parker Rhodes)

The main character in the book, Dèja.

This fall will mark 15 years since the terrorist attacks of September 11, 2001.

Many of us remember where we were, and what we were doing when we first heard about the planes crashing into the World Trade Center, the Pentagon or the field in Pennsylvania, but many students, of course, weren’t born yet.

That raises the questions of what to tell them about what happened and perhaps more fundamentally, when to tell them. Jewell Parker Rhodes has an idea about this – she’s the artistic director of Virginia G. Piper Center for Creative Writing at ASU, and the author of a new book for kids about 9/11, called "Towers Falling."

An excerpt from the book:

"I can tell it's a disaster. A horrible disaster. One tower is on fire. What happened to the other?

Is this why Sabeen cried?

All I have to do is tap the space bar for the video to come alive.

I tap.

Smoke grows, clouding the silver building and blue sky. Flames bubble, lick and streak. it's horrible. There's no sound, but I know there must be people inside the hower hurt, screaming.

How come I didn't know?"