A few of my favorite visualizations
This is for the Oceans homeschool coop meeting we are having today.
Make your own
Fractions are easy visually (not in other representations), so they are a frequent target:
There are two main reasons people may want to visualize timelines. First, something like this is too much for our short-term memories. Second, the inner structure of events becomes apparent visually.
From NY Times
Watch the video around 7:00 to 7:50 for an excellent use of stop motion animation. Note the use of color, size, location and symbols.
1-hour video on data journalism