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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)

Remote sensing detects both human and physical features by using seven distinct image elements: tone, shape, size, pattern, texture, shadow and association. Students are introduced to each of these elements individually through images, descriptions... (View More)

In this activity, learners will use web-based satellite images and other data to investigate the ocean near six different harbors and determine where nature helps the most when it comes to dealing with an oil spill. They will then fill out a mock... (View More)

Audience: Middle school
Materials Cost: Free

This video demonstrates students measuring the acidity of water, using pH indicator paper and a pH meter. The resource includes a video and a written transcript, and is supported by the Water pH Protocol in the GLOBE Teacher's Guide. This is one of... (View More)

The difficulties in predicting landfall of a hurricane are modeled In this kinesthetic activity. Students predict the trajectory of a ball rolled to their partner. They conduct several trials, predicting the path of the ball, observing the actual... (View More)

Students observe the process of cloud formation in this demonstration activity using a rectangular pan, small glass, large rectangular pencil eraser, water and a few grains of salt. In a closed system, water vapor floats inside the glass until it... (View More)

This video demonstrates students measuring the alkalinity of a water sample, using an alkalinity test kit. The resource includes a video and a written transcript, and is supported by the Alkalinity Protocol in the GLOBE Teacher's Guide. This is one... (View More)

Students see that natural hazards present personal and societal challenges by playing a board game that simulates hurricane landfall. Students decide to prepare for, evacuate, do nothing, or stay in their house, and are rewarded for making the right... (View More)

This video describes how to select a soil infiltration study site, and demonstrates procedures used when taking soil infiltration in the field. Instructions for fabricating a necessary piece of field equipment, a dual-ring soil infiltrometer, are... (View More)

This article discusses how Global Positioning System (GPS) satellites work, and how the TOPEX and Jason-1 satellites use GPS data in making very precise topological maps of the oceans. The article includes an activity. Students are divided into two... (View More)

Keywords: GPS; Mapping