I just saw this!
Get ‘em while they last!George Mason University offers a free historical thinking poster to social studies educators, but act fast – there’s a limited number.
"Are you a K-12 U.S. history or social studies teacher, librarian, or teacher educator? Looking for ways to promote thoughtful, critical reading of primary and secondary sources in the classroom? Teachinghistory.org now offers a poster to help you out!"
"Our double-sided color poster features definitions of primary and secondary sources and guides students through the process of historical inquiry. What questions should you ask when examining a primary source? Where should you look for reliable secondary sources? How do you use the evidence you've gathered to make an argument?"