This is a step-by-step guide to designing problem-based learning across the curriculum. Contents show teachers how to develop student-centered, problem-based curriculum, manage student projects across a range of subjects and disciplines, assess projects using portfolios, and involve community members as project mentors. Numerous examples are provided of activities in various disciplines and at different learning levels with ideas to engage students. The concepts and suggestions offered are designed to expand the teacher's classroom toolbox, and practical examples are given of a variety of curricular models, ranging from traditional to less mainstream alternatives, to guide the creation, implementation, management, and assessment of curricular practice and student work. The needs for curricular accountability and classroom evaluation research by teachers are also discussed and the concerns of educators, administrators, parents, and other stakeholders are addressed. (Contains 32 references.) (JLS)