Prehistory refers to the period where information of the past was recorded in materials other than written documents, such as artifacts, drawings, paintings, and sculptures
The demarcation line between the Philippines' prehistory and history is marked by events until April 21, 900, as indicated on the Laguna Copperplate Inscription (LCI)
The Laguna Copperplate Inscription (LCI) is considered the first legal document recorded in the Philippines, containing the release of Namwaran's children from their obligation
Primary sources are original records of events by those who experienced or witnessed them, while secondary sources are based on primary sources and provide evaluation and interpretation
The use of primary sources is important for direct contact with original records, critical thinking development, fostering learner-led inquiry, understanding different perspectives, and bringing stories back to history
Historical method refers to the process of probing primary sources used in writing history, including source criticism which studies the external and internal validity of sources
Historians determine the authenticity of sources by examining the date, locale, creator, analysis, and integrity of the historical sources, ensuring consistency
Principles for determining reliability in source criticism include: relics are more credible than narratives, indications of originality increase reliability, proximity to the event enhances trust, primary sources are more reliable than secondary or tertiary sources, multiple independent sources strengthen credibility, and sources' tendencies should be minimized