Disciplinary core ideas are fundamental concepts that form the basis of a specific field of study, such as science, mathematics, or social studies. These ideas help students understand the essential principles and theories that underpin the subject, guiding their learning and inquiry. In science education, for example, core ideas include topics like forces and motion, energy, and ecosystems. By focusing on these key concepts, educators can help students build a strong foundation, enabling them to explore more complex topics and develop critical thinking skills relevant to the discipline.