Library of Congress


The Library of Congress > Teachers > Classroom Materials > Primary Source Sets > Understanding the Cosmos: Changing Models of the Solar System and the Universe
The Earth with the Milky Way and moon

Teacher’s Guide

Start here for historical context, teaching suggestions, links to online resources, and more:

Understanding the Cosmos: Models of the Solar System and the Universe Teacher's Guide (PDF, 965 KB)

To help your students analyze these primary sources, get a graphic organizer and guides:

Analysis Tool and Guides

Student Discovery Set — free ebook on iBooks

Primary Sources

Click the thumbnail for the original item, the caption for information on the item, or download a PDF or MP3.

The resources in this primary source set are intended for classroom use. If your use will be beyond a single classroom, please review the copyright and fair use guidelines.

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