Students go exploring Britain's beaches. In this geography lesson, students visit selected websites to learn about specific beach habitats and the history of cleaning those beaches.

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

Students examine the effect of foreign species on various habitats. In groups, they identify the population dynamics of the zebra mussel. They calculate averages and graph data from Seneca Lake in New York. They develop hypothesis...