Book on "How Computer Games Help Children Learn"

I just picked up this topic on online learning games as an interesting topic, and am now finding out how well extensively this concept is being worked on and serious work being done.

While lots of schools use computers, question is are they using it to teach the age old stuff or exposing the kids to new ideas still via games. You can use "boring games" to teach math or "more worldly games". Instead of deciding what we want to teach them and then build these online learning games based on that, which typically will be "teachie", is it possible to develop fun games into which the learning points are included?

And this book entitled "How Computer Games Help Children Learn" by David Williamson Shaffer was one that attracted my attention to check out what it is about. I checked out reviews of How Computer Games Help Children Learn on Amazon and found that it had a 4.5 star rating and comments that were well worth reading on what people expect from online learning games.