The KWL strategy is a teaching method created in 1986 by Donna Ogle to engage students in a new topic by activating their prior knowledge and sharing learning objectives. It uses a graphic organizer where students list what they already Know, what they Want to know, and finally what they Learned about the topic before, during, and after instruction. The strategy provides benefits like visual planning, engagement, assessing knowledge gaps, and summarizing learning, though it may not support all learning styles and requires students to internalize the strategy.