What you describe is exactly where I want to go with my Biology class. I am back into 10th grade biology after years of Chemistry and Honors Biology and want to overhaul what I do. I have been stuck in teacher-centered lecture mode (that I experienced back in the 80's!) and I need to change it.
If you could share the structure of your class, i would be very thankful. I am very interested in incorporating meaningful technology as well.
Also, do you incorporate blogs at all? I want to have my students keep a learning log along the way and am thinking a blog is the best 3way to do so. They could essentially compile all the artifacts they create and reflect on the units as we go.