For their talks, scientists and engineers are expected to own the information. For that reason, carrying a stack of note cards or reading bulleted lists on slides is frowned upon by scientific audiences. This website presents exercises to help scientists and engineers improve their delivery for scientific presentations. The first row of exercises focus on learning to present without notes. Students will need to visit these webpages to see instructional films, view examples, and download files. The remaining three exercises focus on the skill of improvising, which is needed for the all too common situation of when something unexpected happens. These three webpages on improvising are only for instructors to view, although instructors will want to have their students view the corresponding films on Vimeo.