The document provides guidance for students on preparing and presenting an exposition as part of their portfolio. The exposition is worth 16 marks and requires a 10 minute speech on the portfolio theme. It must discuss the issues raised by research, challenges experienced during research, and evaluate the reliability and validity of the information gathered. An effective exposition is well organized with an introduction outlining the topic and background, a body discussing the issues and sources, and a conclusion summarizing key points. Strong delivery is also important for achieving high marks.