"Walking on Thin Ice?" is a lesson requiring students to examine the scientific evidence of changes in the Arctic ice cover, intended for use with students in grades 6-12. Eric J. Miller and Andrea J. Perelman created this lesson, which is based on a "New York Times" article. The lesson includes objectives, procedures, and extension activities. The Learning Network, a service of the New York Times Co., provides the lesson online as part of the Daily Lesson Plan Teacher Connections resource.