Educator Materials Videos and Seafood Consumption Choices Students watch two videos about ocean ecosystems, and discuss seafood choices. Article How to Calculate a Biodiversity Index Learn the simple formula scientists use to quantify the biodiversity of any area. Museum Hall Guide Resources for Educators: Hall of Ocean Life Resources to support an exploration of the ecosystems, habitat dioramas, and animal models in the Milstein Hall of Ocean Life.  Educator Materials Index All of the materials in the Bighorn Sheep unit, organized by topic and by type. Collections Mollusca Mollusca collection   The Cosmic Microwave Background Classroom Activity   Educator Materials Graphing Analysis of Algae and Oysters: Comparing Historic to Modern Day Levels Students graph the oyster and floating algae to sea floor algae ratio levels, and analyze their results on a worksheet.   Lessons in Conservation: Volume 10     America Seeking Moon Miners to Dominate Space   Educator Materials Plant Ecology Students learn how to count plants as part of a study of local biodiversity and calculating biodiversity indexes. Educator Materials Index to Winter Roads All of the materials in the Ecology Disrupted unit, organized by topic and by type.   Lessons in Conservation: Volume VIII