How about

The Online Author's Purpose Tutorial...?  May be a little advanced 
for third graders, though.

http://www.manatee.k12.fl.us/sites/elementary/palmasola/ps4gles2b1.htm

Lori

>Dear list,
>
>Desperately searching for a Lab activity to help 3rd graders with
>"author's purpose" and sequencing story events.  Any ideas would be
>greatly appreciated!
>
>Deb Morin
>Lehi Lab
>
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