Projects are in-depth studies of a topic undertaken by a class, a group, or an individual child. Projects are intended to strengthen children's dispositions to be interested, absorbed, and involved in in-depth observation, investigation, and representation of worthwhile phenomena in their own environments. This Catalog on the Project Approach, the second of its kind, describes and illustrates 13 projects done by children in early childhood and elementary classrooms on topics such as: trees, paper, playgrounds, building, potatoes, balls, cars, the vet, the hospital, shoes, water, and baby blankets. In addition to the project descriptions, several articles address a variety of issues of common concern to teachers implementing the Project Approach. These include the phases of project work, project topic selection, the value of drawing in projects, introducing investigation skills with a mini-project, involving special needs students in projects, engaged learning and standards of work, and helping students at various levels of professional training to learn how to implement the Project Approach. Sections on research and implementation of the Project Approach in Canada, and on the Internet and the Project Approach (including listserv discussions), are also included. The Catalog's final section, "Resources for Implementing the Project Approach," includes four ERIC Digests, a glossary, a list of recommended books, an ERIC bibliography on the Project Approach, information on a Project Approach summer institute, and a list of contributors to the Catalog. (EV)