A portfolio is a collection of a student's work that shows their progress and achievements. It must include student-selected samples, criteria for selection, evidence of self-reflection, and growth over time. Portfolios can enhance assessment by revealing a range of skills, supporting instructional goals, and showing change. Journals are records of events, newspapers, or scholarly publications. Letters are a form of written communication and can be formal like letters of recommendation or informal like letters to pen pals.