This activity unit provides an example of how the construction and interpretation of graphs can be incorporated into elementary classroom activities. (MP)

An activity unit is described that helps children recognize the inside and outside of closed curves. (MP)

A seven-day unit on probability used an experimental game-oriented approach, which allowed students the opportunity to draw conclusions from experiments in which interest was high. (MP)

One student's project involved a contest of guessing how many peanuts were in a 100-pound bag. His teacher briefly reflects on the wide range of guesses and students' concept of large numbers. (MP)

Ten activity cards, designed to introduce students in upper elementary grades to programing in BASIC, are presented. The concepts and skills involved are thought to correspond to the pupils' knowledge of mathematics and aid in reinforcement. The cards represent a total of about one hour of computer time. (MP)

Five activity lessons are proposed to present applications of probability and to exhibit its use in conjunction with statistics as a major decision-making and problem-solving tool. (MP)

Given are activities involving the use of triangles and triangle paper, in the form of problems that require searching for different possibilities to fit a given condition. (MP)

Teacher-developed materials are described, with six activity cards and a discussion of the objectives of the full set of materials. (MP)

A brief outline of instruction for one unit of informal geometry is covered. The problem solving unit described involves work with picture frames and includes many mathematical concepts. (MP)

A minicourse designed to teach fourth and fifth graders about computers included decoding computer cards, a "race" against the computer, a field trip, flow charting, and writing computer programs. The course was limited by the students' ability to understand abstract mathematical concepts. (MP)