Fifth graders define vocabulary words regarding air quality. In small groups, they match magazine pictures or create illustrations for definitions and terms, and share the flash cards with their group.

Upper graders identify the major characteristics of a wetland. They explore the human factors that change a wetland and write a descriptive paragraph about wetlands. This comprehensive lesson also has an interactive "Watershed Game"...

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...