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In this mathematical activity, students learn why a tectonically-active area of the globe is called "The Ring of Fire" by examining a data map differentiating shield volcanoes, cinder cones, and stratovolcanoes and calculating the percentage of active volcanoes that are contained within this region. The resource is part of the teacher's guide accompanying the video, NASA Why Files: The Case of the Mysterious Red Light. Lesson objectives supported by the video, additional resources, teaching tips and an answer sheet are included in the teacher's guide.
This resource is located on page 53 of the PDF document.