The concept of portfolios has been adopted from the arts where students maintain evidence of their best work to illustrate their accomplishments. In classroom instruction, portfolios are used in a similar manner, but the contents of the portfolio may represent work in progress, formal products, and other evidence of student knowledge relative to specific objectives or purposes. One way to assess a person's abilities and understanding in fields, such as translation, is to review samples of their work. The portfolios contain a range of work, such as initial sketches, early and final drafts. The work collected in the portfolios is used as a source of instruction. The emphasis on meaningful tasks, self-reflection, and goal-setting. For this reason, a portfolio is not a random collection of reflections or student products, but rather it is systematic in that the reflections that are noted and the student products that are included relate to instructional purposes.