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Did it sneak up on you again this year? Kidding aside, Richter Scale Day is April 26, the birthday of Charles Richter (1900-1985), inventor of the Richter scale. Most middle school science curricula include earth science studies in plate tectonics and its related phenomena, including earthquakes. Catastrophic events, such as the recent Italian earthquake, provide teachable moments. What better time to integrate a study of the Richter scale technology with science content?

You didn't miss Richter Scale Day, did you?

Follow the journey that Darwin took on the Beagle. A ship makes the journey on a map as the user scrolls through a series of text boxes that are rich with images.