I did a lesson on this using the book "The Day Jimmy's Boa Ate the Wash." http://www.amazon.com/Day-Jimmys-Boa.../dp/0140546235
It's a really cute book, and it's good for cause and effect and the sequence of events.
If you haven't read it before, it's basically a kid telling his mom about all the crazy things that happened during his field trip that day, and he goes in reverse order. He starts with "It was great, until the cow started crying," and Mom asks why the cow was crying, and he tells her the haystack fell over, and she asks why the haystack fell over, and it turns out that the farmer crashed into the haystack because of something else, and on and on. That part makes it challenging because the sequences goes backwards... so part of your lesson could be having the kids sort out the chronological order everything happened in.