This manual outlines the nature of some of the major curriculum projects in mathematics and lists materials which are available from these projects. An introductory statement concerning the history and philosophy of each program is indicated. The curriculum projects reported on are: (1) Boston College Mathematics Institute, (2) Cambridge Conference on School Mathematics, (3) Commission on Mathematics of the College Entrance Examination Board, (4) Computer-Based Mathematics Instruction, (5) Greater Cleveland Mathematics Program, (6) The Madison Project of Syracuse University and Webster College, (7) Mathematical Association of America, (8) Minnesota School Mathematics and Science Teaching Project, (9) National Council of Teachers of Mathematics, (10) New York State Mathematics Curriculum Activities, (11) Ontario Mathematics Commission, (12) Patterns in Arithmetic, (13) School Mathematics Study Group, (14) University of Illinois Arithmetic Project at Educational Services Incorporated, (15) University of Illinois Committee on School Mathematics, and (16) University of Maryland Mathematics Project. (RP)