Welcome to the Bridge Data Tip Archives. The Data Tips are now categorized by subject. Feel free to search under the topics below for great classroom data activities.

Ocean Observing Systems
Find out the salinity in the Gulf of Maine, the dissolved oxygen in the Chesapeake Bay, and the water temperature at a coral reef in Puerto Rico. These data and more are available through ocean observing systems 24 hours a day. Investigate the water from across the globe right at your computer using these data activities.

Biology
Interested in geese, oysters or fish communities? Want to talk about sea turtles, exotic species, sharks or swordfish? Would you like to travel to the Galapagos or accompany gray whales on their annual migration? Check out this page to find biological data tips.

Human Activities
Become an ocean explorer! Discover shipwrecks and visit underwater habitats using state of the art technology. Investigate estuaries, aquaculture, recreational fishing issues, or oil spills. Visit this page to find human activity data tips.

Ecology
Stop an alien invasion! Find out why are coral reefs at risk. Explore national sanctuaries or become a Bay investigator. Ecological concepts are the subject of these data tips.

Physics
Are you psychic...think you can predict the tides? Do drifter data describe wandering souls or ocean currents? Find out the answers to these questions and more on this physics page.

Chemistry
Prepare to enter the dead zone. Examine seasonal temperature stratification of the largest fresh surface water system on earth. Learn how to predict temperature profiles and graph dissolved oxygen data. Visit this page to find chemistry data tips.

Climate
What has ceased increasing? Could it be the hole in the ozone? Do you believe in global climate change? How are hurricanes formed and what does El Nino have to do with sea level? Determine the answers to these and other questions in this climate section.

Geology
Bring an Axial Volcano into your classroom! Create an underwater landscape. Find out what factors influence the flux of sand or conduct your own beach profile. Check out this page for geology data tips.