There are an average of three human fatalities by bears in North America every year, which is low when you compare it to the 26 killed by dogs and the 90 killed by lightning annually. The lesson encourages researching human-bear...

How long do we have to wait? Given several days of times between eruptions of Old Faithful, learners create a graphical representation for two days. Groups combine their data to determine an appropriate wait time between eruptions.

The beginning of the 20th century began with a shock: the assassination of President McKinley. The man who would take his place—the youngest American to ever become president—led quite a life before stepping foot in the Oval Office. An...

Waterton-Glacier International Peace Park includes whitebark pines that are over 1,200 years old, meaning they have been there since before medieval times. The second lesson of five details how to read tree rings for climate change and...