Do you know the name for the biological study of interactions? A short presentation with accompanying worksheet introduces individuals to ecology. The materials offer a broad overview of the subject and the levels of organization to...

Students identify and interpret concepts about how the Earth was formed and convey some of these ideas in a painting. Students experiment with different types of paints and paint applicators to achieve a variety of visual textures....

A well-designed, comprehensive, and attractive slide show supports direct instruction on how sonar and echolocation work. Contained within the slides are links to interactive websites and instructions for using apps on a mobile device to...