This manual contains individual learning activity sheets on "Prenumbers", "Whole Numbers", and "Fractions." Each activity sheet and its accompanying instructional recommendations focus on a single concept or skill. The program presented is not intended to comprise a complete mathematics program for children who have difficulty in mathematics and for the teachers who serve them. It is designed for use with children who: (1) manifest needs in one or more specific topics in mathematics; (2) receive remedial or supported instruction within the regular classroom or in a support center; (3) require a variety of alternative presentations to assist them in concept and skill development; (4) are in need to varying amounts of repetition and practice to enable them to acquire and generalize concepts and skills; and (5) often show minimal proficiency in working independently and in self-monitoring and self-appraisal. (Author/PK)