The tutorials have been developed through an iterative cycle of: research on the learning and teaching of physics, design of curriculum based on this research, and assessment through rigorous pretesting and post-testing in the classroom. The curriculum has been shown to be effective for students in regular and honors sections of calculus-based and algebra-based physics. The tutorials are primarily designed for a small class setting but have proved to be adaptable to other instructional environments.Tutorials in Introductory Physics is a set of instructional materials intended to supplement the lectures and textbook of a standard introductory physics course. The emphasis in the tutorials is on the development of important physical concepts and scientific reasoning skills, not on solving the standard quantitative problems found in traditional textbooks. The First Edition incorporates these changes and also includes several new tutorials on topics covered in the Preliminary Edition. Ongoing research has led to modifications to the tutorials and associated homework in the Preliminary Edition of Tutorials in Introductory Physics.There is increasing evidence that after instruction in a typical course, many students are unable to apply the physics formalism that they have studied to situations that they have not expressly memorized. In order for meaningful learning to occur, students need more assistance than they can obtain through listening to lectures, reading the textbook, and solving standard quantitative problems. The worksheets, which consist of carefully sequenced tasks and questions, provide the structure for the tutorial sessions. Students work together in small groups, constructing answers for themselves through discussions with one another and with the tutorial instructors.