Biology courses have thousands of words to learn in order to intelligently discuss the subject and take tests over the material. Biological fluency is an important goal for students, and practical methods based on constructivist pedagogies can be employed to promote it. We present a method in which pairs of students write dialogues from instructor-assigned word lists that the student pairs then present before the class. This method helps students understand the contextual meaning of the biological terms, achieving true fluency rather than just memorizing definitions.