RADAR is a strategy in which students build analogies that take advantage of their own knowledge in order to develop and reinforce concepts taught in the content areas. Using RADAR, students establish analogous relationships between the concept they are studying and a seemingly unrelated concept. While examining these analogies, they relate the new material to an old concept, something with which they are familiar. In the process of comparing the new to the known they are forced to pay attention not only to the details of the concept being presented, but also to the dynamics of the concept--the processes involved in its workings.
Martin, C. E. (1983). Using RADAR to Zero-In on Content Area Concepts. Reading Horizons: A Journal of Literacy and Language Arts, 23 (2). Retrieved from https://scholarworks.wmich.edu/reading_horizons/vol23/iss2/12