Exploring the numerical nature of quadratic equations is the focus of this article. Small solutions, the general case, and a detailed analysis are each presented. (MNS)

When students first meet the concepts of mean and standard deviation, it is desirable that data be generated on the spot by the students themselves. How this can be done with a microcomputer is presented. The program for "Stop the Stars" is included. (MNS)

Included in this section are brief articles on drawing altitudes of triangles, sketching parabolas, and visualizing variability. (MNS)

Presents an activity in which students estimate the weight and volume of one million dollars in notes and coins of various denominations. Also presents several geometry activities. Student worksheets for the activities are included. (JN)

This article describes a method of developing trigonometry through a combination of the traditional right triangle approach and the wrapping function approach. (DT)

Properties of quadrilaterals having diagonals which are perpendicular and equal in measure are explored. (DT)

Consistent schemes for classifying triangles, quadrilaterals, and solids are suggested. (DT)

Properties of the number 1,001 are investigated. (DT)

Methods of turning student errors into a positive mathematical learning situation are discussed. (DT)

A proof is given concerning the intersection of the medians of a triangle, then the problem is generalized and discussed. (DT)

A general definition of congruence for all geometric figures is developed. (DT)

Different methods for doing five basic geometric constructions are described. (DT)

Two methods are considered for finding the logarithm of a number using elementary arithmetic. (DT)

Methods of teaching students to solve equations and inequalities containing parameters are suggested. (DT)

A geometric method of solving quadratic equations is described. (DT)