Better than I'd even hoped
First off the images are gorgeous with the retina display, better than anything in print. I've found myself just staring at them at times. Beyond that the videos and inter activities convey the science content and make what would normally be a long text book a good step easier to understand. The Idea that I can fit a a handful of textbooks onto a single iPad versus carrying boulder of a backpack makes me happy already. Combine that with note taking ability and its a clear winner!