I learned a lot from this two authors. What I thought about inquiry is that students will be exposed to the concepts and the materials. Then they will brainstorm about the concept. They will prove the concept by using the materials available without being given the procedures of how to do it.
It did not come to my mind that datasets from the web could be used to to ingage students about inquiry. I guess I'm caught with the expectations of my school, the MCAS and the science fair that I was not able to think that way.

Thanks for your response, Mitchelle. The question of Inquiry vs Content still is problematic for me.As a child I lived a life of inquiry and constantly experimented( to the extent of twice accidently setting our kitchen on fire) and my recollections of "science" education at both the high school and collegiate levels are a blur of (seemingly)mindless memorization marathons.However "the facts" in retrospectpermitted me to order much of what I had wondered about.I quess it takes a leap of faith to embrace the Rogerian philosophy fully.