I would be one of those moms who don't care to teach science. BUT I do want my son to learn! The funny thing is that I enjoyed learning science in school and loved studying pharmacology, anatomy, etc in college. I just don't like teaching it at this point in my life with 4 kids at different ages. It's hard, and I need a program they can be independently done for the most part.
I did see on another post a recommended DVD series called Biology 101. That looks interesting for the whole family. I wish I could see a preview.