Students will design, build and then test a rain gauge to measure precipitation. By sharing their results, they will recognize the need for standardization and precision in scientific tools. All background information, student worksheets and... (View More) images/photographs/data are included in these downloadable sections: Teacher’s Guide, Student Capture Sheet and PowerPoint Presentation. This activity uses the 5E instructional model and is part of the Survivor Earth series of one-hour lessons. (View Less)

The video is a procedural guide to sampling electrical conductivity measurements in water bodies using standardized GLOBE protocols. It provides a step-by-step explanation of the field procedure and features students conducting the investigation and... (View More) asking questions about measuring electrical conductivity and what these measurements mean with respect to water impurities and dissolved solids. The resource includes a video, transcript, and is supported by the Electrical Conductivity Protocol in the GLOBE Teacher's Guide. This is one of seven videos on hydrology in the 24-part instructional video series describing scientific protocols used by GLOBE (Global Learning and Observation to Benefit the Environment) a worldwide, hands-on, K-12 school-based science education program. (View Less)

This video introduces the measurement of dissolved oxygen in a water body as an important indicator of ecosystem health, and demonstrates students analyzing a water sample for dissolved oxygen. The resource includes a video and a written transcript,... (View More) and is supported by the Dissolved Oxygen Protocol in the GLOBE Teacher's Guide. This is one of seven videos on hydrology in the 24-part instructional video series describing scientific protocols used by GLOBE (Global Learning and Observation to Benefit the Environment), a worldwide, hands-on, K-12 school-based science education program. (View Less)