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In this data activity, students explore real NASA satellite data to compare the near-surface air temperature and surface temperature in different climate regions, and draw conclusions about the seasonal patterns and the effect of the underlying surface on the air temperature. 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.