As part of assignments or projects, students are often times required to use 'primary sources'. Therefore, it is essential to understand the difference between primary and secondary sources:
Primary sources are original, first-hand records of factual investigation, artistic creation, or personal experience. Reports of scientific experiments, artistic works such as movies, paintings, and novels, visual and personal records such as photographs, eyewitness reports, letters, memoirs, and legal documents are examples of primary sources.
Secondary sources are commentaries, overviews or summaries of the content found in primary sources. Interpretation and appreciation of literature, summary or commentary on research, historical and biographical writings based on factual events and primary sources are examples of secondary sources.