Students must be able to present ideas and results to other scientists and engineers, as well as to the lay public and specialists in other fields. Ask them questions and let them respond without interrupting. As they gain confidence, move on to class presentations and talks at student disciplinary-society meetings. Help them develop their research presentations. Videotaping practice sessions can enable students to see correctable habits, and it helps build their confidence.
Many students benefit from professional training, via speech classes or consultation.
One of the most important communication skills is teaching, a skill that undergraduates can begin to develop. One way is to accompany them to high schools where the students can offer career guidance and college information. Developing Skills as a Graduate Student Communication skills. Rather than withdraw into the isolation of research, students should continue to develop their writing ability and oral expression during graduate years. If they are teaching assistants, they might learn more from leading class discussions than simply grading papers.