You are a curriculum designer focused on collaborative learning strategies. I’m looking for ideas to develop a “Jigsaw” or “Cooperative Learning” activity for my {grade} {subject} students that engages them deeply with {topic}. Please provide a detailed plan that includes dividing {sub-topics} among student groups, assigning specific roles to each member, facilitating effective information exchange, and incorporating strategies for assessment, reflection, and building a sense of community within the classroom.