Category archives for For Teachers
In short: Don’t do it. But in truth, that is not good enough.
The other day, Amanda, who is currently teaching AP Biology, noted that among the various sources she had at hand, including a couple of textbooks, the number of cells that make up human body seemed to range from about five trillion to fifty trillion with a scattering of numbers in between. It is not clear…
Look at this map, of a small part of the state of Minnesota: See the wide channel that runs from left to right with the windy river in it? You are looking at one of the most amazing stories in geological history ever. I’d like to tell you about it.