Lung cancer is the second most common cancer diagnosis and is the leading cause of cancer-related death in the United States for both men and women. The etiologies of many different types of lung cancer can be linked to risk factors that can be prevented, such as chronic tobacco smoking. Lung cancer is significantly more prevalent among socioeconomically disadvantaged and minority populations. Due to the significance of lung cancer as a public health issue, the authors have developed a module on the topic of pulmonology--a medical specialty field that deals with disease processes involving the respiratory system--to (1) explain the basics of normal lung physiology; (2) explain the pathological changes associated with lung cancer and other lung diseases; (3) provide preventive education on the importance of tobacco abstinence and the damaging effects of tobacco smoking on the lungs; and (4) introduce students to some pulmonologic interventions. The Cancer Education Initiative Program is targeted toward first- through third-grade students from underrepresented minorities of the Los Angeles Unified School District (LAUSD) and aims to address students' misconceptions and lack of knowledge regarding the pathogenesis, diagnosis, and treatment of cancer; provide preventive health promotion education so that students may make more healthy lifestyle choices, and foster students' interests in STEM and health care fields. In compliance with the "Next Generation Science Standards" (NGSS), a cancer education curriculum was developed and implemented featuring lessons based in science, technology, engineering, and math (STEM) concepts in relation to cancer. The lesson plans and activities align with grades 3-5 NGSS standards; however, they were implemented with students of grades 1-3.