The jigsaw strategy is a cooperative learning technique where students are broken into expert groups to learn about subtopics of a larger topic, then return to home groups to teach their subtopic to their group members. This helps build comprehension as students must learn to become experts and teach others. It encourages collaboration as students work with different group members to collectively learn the entire topic. The jigsaw strategy involves breaking students into home groups, then expert groups to research subtopics, before returning to home groups to teach their subtopic and combine all pieces of the puzzle.