The lesson for junior high and secondary social studies classes illustrates the effects of a breakdown in the functioning of one key system in an interdependent network. Based on an airline strike, the activity involves students in identifying the subsystems affected by the strike, devising solutions, and writing business reports about the…

Using four activity sheets, students learn to identify fractions that are easy to use in estimation situations. (MNS)

Use of compatible numbers resulting in easy mental computations is described, along with related teaching and testing tips. (MNS)

An activity is described as an example of an application that draws on the behavior of current in electrical circuits to create a symbolic algebra. Five worksheets are included, with discussion of their use. (MNS)

Discussed is an approach in which algebra and geometry are interwoven in a series of problems that develop one from another. The two main concepts are the algebraic concept of function and the geometric concept of the "family of quadrilaterals." (MNS)

Directions are given for making comprehension guides to help students comprehend word problems. Samples for two problems are given, and uses are discussed. (MNS)

The problem of controlling the grizzly bear population at Yellowstone is described. The results are presented in graphical form and discussed. A computer program is included. (MNS)

This article discusses four current explanations for man's failure to resolve conflicts. Information about and techniques for improving human judgment and opportunities for students to learn to use these are needed to improve efforts to solve social problems. (KM)

Presented are a series of word problems which give students the opportunity to use or develop problem solving skills. The problems are open-ended, with possible answers included. (JP)

In the evaluated project the core of the elementary curriculum is centered around economics, although other social science disciplines are integrated into the program which emphasizes helping students to develop problem solving abilities and analytic thinking through their involvement in learning activities. (SM)

Describes an activity which introduces students to each other while introducing the concept of Cartesian coordinates. Also describes an activity for finding the least common multiple, and computer programs (with listings) for generating shapes resembling windowpanes and for determining amounts wagered in a golf game. (JN)

Several brief articles are included in this section. "Purple Puzzlers" are challenging problems for algebra students. "Linear Invaders" is a game to reinforce concepts of graphing lines. "The Diagonal Method" is used to prove that the real and natural numbers cannot be put into one-to-one correspondence. (MNS)

Index cards, masking tape, pizza shells, golf tees, and empty soda bottles can be used to make manipulative objects to be used in children's mathematics games. Twenty-two games that provide practice in number drills and problem solving are described, along with instructions for making objects needed for the games. (PP)

Work centered on open-ended problem solving was developed. Activities for students aged 14 focused on measurement of length are described, with problems on pygmies and giants. (MNS)

Discusses two computer programs ("Billiard Ball" and "Taxman") that foster the development of higher-level thinking skills in children. Indicates that children develop such skills as planning ahead, analyzing, and using models/diagrams in the first program. Includes list of 26 programs with price, source, hardware needed, and…