A graphing activity which allows students to work independently of the teacher and the textbook is described. The activity involves providing data in order to develop the skills necessary for interpreting the collected information. (JT)

The calculator is used to obtain values for use in graphing curves. Three worksheets are included. (MP)

Practical decisions involving fuel economy are shown to require important skills from secondary school algebra and analysis. (MP)

Two graphing activities are supplied for providing practice in plotting points in the rectangular coordinate system. (JT)

Three examples of graphing-and-predicting activities that can be used with elementary school children are described. (DT)

An example is given of a class of problems whose solutions require the use of a scientific calculator in order to plot the graphs. (MP)

An alternative approach is described for presenting the idea of the derivative through the use of chords of a graph. (MP)

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

Outlined is the preparation and use of graph paper for activities in counting' approximation, making bar graphs, and decimals. (MP)

Activities described for using zucchini to teach measurement include: guessing, graphing, and measuring length and weight; comparing sizes and shapes; and puzzles. (MP)

A mathematical derivation is given, developing the cardioid as an epicycloid locus. Curve-stitched designs are given for a family of epicycloids. (MP)

This experiment designed for beginning physics students, is related to postal regulations restricting the size of envelopes. A graph is constructed that allows for testing the mailability of envelopes. (MP)

This discussion of ways to use spirolaterals in the classroom includes making conjectures, hypotheses testing, and proofs, as well as a number of examples. (MP)

The author describes a series of current economic ideas and situations which can be used in the mathematics classroom to illustrate the use of signed numbers, the coordinate system, univariate and multivariate functions, linear programing, and variation. (SD)