This document discusses using wikis for collaborative and project-based learning in education. It provides examples of how wikis can be used across subjects for organizing information, facilitating discussions, and engaging students in collaborative work. Specific tools like PBWorks and Wikispaces are recommended as educator-friendly wikis. A sample lesson plan is included for creating a math vocabulary wiki where students can collectively contribute and edit terms. Resources and rubrics for establishing and assessing student work on wikis are also outlined.