This videotape begins by reviewing how perimeters and areas of plane figures change when the figures are expanded or contracted. The videotape then defines pi, explains that pi appears in a variety of formulas, discusses the early history of pi, invokes similarity to explain why the ratio of circumference to diameter is the same for all circles regardless of their size, gives two animated proofs of the area formula of a circle, shows Archimedes' method for estimating pi, describes a sequence of improved estimates for the value of pi, and points out that pi is irrational. Each videotape in the series is accompanied by a workbook designed to help instructors integrate the videotape with traditional classroom activities. The workbook begins with a brief outline of the video program, followed by suggestions of what the teacher can do before showing the tape. Each section of the workbook summarizes the important points in the video segment.
Some sections contain exercises that can be used to strengthen understanding.
The exercises emphasize key ideas, words and phrases, and applications. Some sections suggest student projects. ENC does NOT distribute this resource. Hewlett Packard Company.