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In this data analysis activity, students will obtain snow cover and surface temperature data for a locale in Alaska, plot the data, investigate seasonal trends in snow cover, and the relationship between snow cover and surface temperature at that locale. Step-by-step instructions for use of the MY NASA DATA Live Access Server (LAS) guide students through selecting a data set, importing the data into a spreadsheet, creating graphs, and analyzing data plots. The lesson provides detailed procedures, related links and sample graphs, follow-up questions, extensions, and teacher notes. Designed for student use, MY NASA DATA LAS samples micro datasets from large scientific data archives, and provides structured investigations engaging students in exploration of real data to answer real world questions.