Columbia University
Scientific Background on the Indian Ocean Earthquake and Tsunami
This site features information and related links that can be used by students and scientists to understand the events that led to the December 2004 Indian Ocean tsunami.
Illustrative Mathematics
Illustrative Mathematics: 7.sp Election Poll, Variation 2
Members of the seventh grade math group have nominated a member of their group for class president. Every student in seventh grade will cast a vote. There are only 2 candidates in the race, so a candidate must receive at least 50 percent...
PBS
Pbs Learning Media: Earth's Systems: The Water Planet
Observe different forms of water and how it covers about 75 percent of Earth's surface in this media gallery captured by NASA and the U.S. Geological Survey (USGS). Use the satellite and ground images in this resource to enhance student...