“…A recent national survey indicates that teachers in 86% of public schools use online instructional resources outside of their textbooks or other school-provided resources to a moderate or large extent (Gray and Lewis, 2021) In this study, we set out to answer these questions, reviewing social studies lesson plans and activities from eight websites that we often hear about teachers using and that colleagues cite as high quality: C3 Teachers, EDSITEment, Facing History and Ourselves, Learning for Justice, Library of Congress, National Archives, Stanford History Education Group and World History for Us All. We concentrated on websites and lessons most closely associated with the discipline of history because history is usually the social studies discipline students study the most, and while the role of data visualizations is not as obvious as in geography, their part in history is just as central (Gibbs, 2016;Shreiner, 2018Shreiner, , 2020. Our findings indicate that while about a third of online lesson plans contain data visualizations, guidance on teaching data literacy is mixed, underscoring the need for teachers to consider supplementing and modifying lesson plans that they find online.…”