Great ideas all. DH and I sneaked off to Half Price Books and found some great selections ranging from a beautifully illustrated coffee table type survey of sciences called "Scientifica" to some used textbooks for basic science courses at the local community college. DD is going to love these. They will be under the tree along with her new kids' microscope (hope this is any good) very soon.
I checked out "The Great Courses." I had not heard of them ColinsMum but they look fantastic. Thanks for the heads up on the prices though. I headed straight for the sale tab and found a great science survey course for non-science majors. Are the lecturers pretty engaging for kids or is it hit and miss like classes at college can be?
I will take a look at the series you suggest raptor dad. Happy holidays all!