*** All my classes are available in Spanish upon request ***


In this one-time class, students will meet Henrietta Swan Leavitt, an astronomer whose discoveries are still vital to astronomers today. We will focus on her main contribution, a rule she discovered to measure distances in space. While understanding this, students will learn about parallax, apparent magnitude, absolute magnitude, variable stars, and Cepheids. These concepts will be explained through hands-on activities and in child-friendly language, without sacrificing scientific content. I will use materials to support visualization and the learning process. Students can bring their own materials (listed below) if they wish to experiment themselves. Although this class uses a PowerPoint, students are encouraged to actively participate in activities and discussions to experience the concepts firsthand. No prior knowledge of astronomy is required. Leavitt's main contribution is published in this article: https://adsabs.harvard.edu/full/1912HarCi.173....1L, and we will explain it in accessible terms during the class.