This Teacher Guide uses primary source materials and student worksheets to define and contextualize antisemitism before, during, and after Holocaust. It encourages students to analyze various primary sources (past and present) to help them develop the necessary tools to identify and understand continuous anti-Jewish tropes, allowing the ability to recognize and combat antisemitism. This is a project of the California Teachers Collaborative for Holocaust and Genocide Education, established by the JFCS Holocaust Center, with support from the Marin County Office of Education and the State of California.