Explains and details the events that led up to and followed the downfall of Communism in Eastern Europe. Very thorough and detailed, including information about leaders, movements, and historical information.

Practice identifying the visual characteristics of rocks.

Watch out. It's Eddy Vortex, Superhero. He swirls, he tumbles, he churns up air and water. OK, maybe eddies and vortices aren't exactly superheroes, but they are powerful regions of air and water flow that you have to watch out for in...

A profile of Tracy K. Smith, the U.S. Poet Laureate for 2017. Includes an audio recording of her reading the poem "When Your Small Form Tumbled Into Me." (Published June 14, 2017)

From "1989: The Walls Came Tumbling Down," a lecture by a college professor, this biography of Leonid Brezhnev's (1906-1982 CE) life focuses on his role as head of the Communist Party and head of state in the Soviet Union.

This manual was created by 4th grade students at the Alice B. Beal Magnet School in Springfield, Massachusetts, during a learning expedition on rocks and minerals. The expedition included fieldwork to local geological sites and to...

Because the Dwarf Shrew is so small, it doesn't trigger the older snap or box traps, and before 1966, only 18 specimens had been collected. With the use of pitfall traps, which are basically cans sunk into the ground so that the animal...

This photo shows an epic avalanche in action on Mt Everest. Huge amounts of snow tumble down the mountain at rapid speeds.

Design and build a track with obstacles you must go over, under, around or through. Participate in a non-competive event with a variety of games that develop gross motor skills.