Here is a comprehensive and lengthy presentation on tidal wetlands. Many photos of grasses and the animals that live among them are included, making this a virtual field trip. The progression of the presentation is as if you would walk...

Amazing high-quality satellite imagery, photos, informational graphs, and detailed diagrams comprise this presentation on the movement of estuaries and the continental shelf. Data used as an example is from The Chesapeake Bay and because...

Wow! Expose your chemistry class to every method of separating mixtures by showing this slide show. Learners will view diagrams and graphic organizers that support notes about filtration, chromatography, distillation, centrifugation, and...

A sequence of slides that show the apparatus set up for varying practices of distillation. The equipment pieces in each diagram are labeled and their purpose noted. Your class can use these pictures to help set up their own equipment, or...