This site teaches students the way science is practiced by real scientists, namely, stepping away from the usual recipe of scientific method and instead, use alternate approach to make discovery.
Not sure how I got this link about whale evolution, but the wbsite on Teaching the nature of science contain great information on how to engage students in inquiry-based learning, and offers practical guide in successful discovery learning. Information presented here upholds and reinforces the unifying concepts that is so important to teach to our students now a days. Â Whale evolution was just one segment of myriad of other teaching topics they offer insights on how to teach.