In this lesson, students examine the Holocaust through the experiences and perspectives of Hidden Children, an especially vulnerable population during World War II. Students analyze primary sources, including photographs and oral survivor testimony, to understand why children went into hiding and the effects hiding had on their sense of self, identity, and safety. Through an analysis of the short film A Great Big Secret, students hear the story of survivor Anita F, a hidden child during the war, and explore themes of empathy, resilience, and the importance of being an upstander and advocate for tolerance.