The U.S. Moves West (and South)

The U.S. census bureau has a quite interesting interactive map showing how the U.S. population has moved westward since 1790.

The center is determined as the place where [a] map of the United States would balance perfectly if all residents were of identical weight.

–U.S. Census (2011): Center of Population

Mapping America: Interactive Census Data Maps

The number of elementary students in private schools in the Memphis area. Image from the New York Times' Mapping America project.

The New York Times has made data from the U.S. census available in an interactive map. This is an excellent tool to play with, since it has geographic information about income, race, education and more. The data is at the census tract level, so it is quite detailed.

I can see using this app being very useful for local research projects. Simply comparing the location of the different racial populations in a city like Memphis to the spatial distribution of income or education would probably tell a lot that we already intuitively know.

CellsAlive: Cell model

Interactive cell model from Cells alive!

Another good interactive cell model, similar to the Teach.Genetics‘ Flash app I posted about earlier, can be found at CELLS alive. I first used the CELLS alive website two years ago and I like it because, while it has a much simpler picture than Teach.Genetics’, it has a nicely linked glossary of terms. The glossary is, however, a little technical, but it’s a nice exercise (and not terribly difficult) for students to decipher the basic information that they need.

Inside a cell

Looking inside a cell. From Teach.Genetics.

Teach.Genetics has a bunch of “Print and Go” pdf lessons on their site, but also have a really neat interactive page where you can look inside an animal cell. What’s really neat about this flash app is that you can move around a little, round window as you scan through the cell membrane. You can also take the membrane away to see everything inside the cell at once, but that takes away the challenge.

When you use the little window you have to piece together what everything inside the cell looks like by memory. For a student new to the parts of a cell this might be a bit of cognitive overload, but once your somewhat familiar with the pieces, this makes for an interesting challenge.

The Teach.Genetics site and materials are free for educational use.