This collection of activities is organized into two sections. The first, entitled "Manipulatives," suggests materials which may be used to introduce or reinforce mathematical concepts such as: basic arithmetic operations; place value; long division; percents; multiples and common denominators; informal geometry including area, perimeter and volume; and pattern recognition and other problem-solving strategies. The second section, "Games," reflects the authors' conviction that games have a contribution to make in the mathematics classroom, particularly in the areas of basic skills practice, applications, and logic and strategy development. Like the first section, it is organized by grade level. The majority of activities are appropriate for the primary and elementary levels although many include variations suitable for higher grade levels. None of the activities described requires the purchase of commercial materials and both sections are prefaced with articles providing a basic rationale for the use of manipulatives and games which may prove helpful when dealing with skeptical parents or administrators. (MM)