Rebecca,
I've definitely used Google Books before or the "look inside" feature
on Amazon and I think if kids had technology (reader on their phone,
an ipad, or a laptop) available to them frequently they would be
inclined to use an online source. This sounds like a really
interesting project! Mine is slightly related in that I'm using
online vocabulary sites to see if students will be more engaged in
vocabulary instruction through technology/the internet. For my
project I'm also doing self assessments for students on their learning
and what they think about the sites--this might work for your project
too. I'm really interested to see the results of your project!
Katy Hamilton