Low tides, high tides, spring tides, neap tides, diurnal tides, semidiurnal tides, mixed tides ... just how many types of tides are there? The 10th installment of a 23-part NOAA Enrichment in Marine sciences and Oceanography (NEMO)...

Eighth graders compare their local ecological zone to the tropical rainforest. For this natural ecology lesson, 8th graders complete an activity about the differences in ecological zones. They compare their biome to the Guatemalan...

First, biology pupils research land and marine habitats along the route of skipper Rich Wilson's Great American II. Then, using colored paper clips scattered across a colored paper background, they play the predator-prey game to...