Smithsonian Institution
National Postal Museum: The Story of the Pony Express
This article explores the story of the Pony Express, the "speedy" mail service that once connected the Eastern U.S. with the West.
CommonLit
Common Lit: Reports From the Ruins of the San Francisco Earthquake of 1906
A learning module that begins with "Reports from the Ruins of the San Francisco Earthquake of 1906," accompanied by guided reading questions, assessment questions, and discussion questions. The text can be printed as a PDF or assigned...
National Council of Teachers of Mathematics
Nctm: Figure This: What Time Is It In?
Can you figure this? If it is afternoon in San Francisco, California, what time is it in Cairo, Egypt? Explore positive and negative number values in this one page activity using time zones from different parts of the world.