Students, after locating different marine habitats on a globe, play a card game about ecosystems, food webs and organisms.

Students study the benefits of estuaries. They construct a saltwater food web, and complete worksheets and a quiz.

Sixth graders complete a five-week unit investigating the eight major biomes of South America. They conduct Internet research, collect short-term and long-term climate data, and create a HyperStudio slideshow stack about a selected biome...