A classroom activity in which numbers are assigned to words on the basis of geometric configuration of the letters is described. (SD)

A paper staircase drawn on a grid forms the basis for a discovery lesson in algebra. (DT)

Many activities are described for teaching two fundamental concepts concerning one-half. These concepts are one-half of a number and one-half of the size. (JT)

Scavenger hunt activities for a range of mathematical topics are presented. Numbers, measurements, fractions, and geometry are among the topics included for the 14 types of hunts described. (MNS)

A sequence of activities leading to the concept of Pi is suggested. (DT)

An activity is described in which PI is approximated by measuring the perimeters of regular polygons inscribed in a unit circle. (DT)

The algorithms for finding cube roots is approached by slicing a cube. (SD)

Similar rectangles are the basis of a set of activities using newspaper. Topics arising include infinite series and Pythagorean theorem. (MP)

Three theorems for Pythagorean triples are presented, with discussion of how students can amend their ideas about such numbers. (MNS)

Deriving all Pythagorean triples from simple patterns within an addition table is presented, with formulas included. (MNS)

Using sweeps to find areas, applications of reflections to miniature golf, and zeroing in on zeroes are each considered in the brief articles in this department. (MNS)

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)

A game designed to introduce aspects of coordinate geometry is reviewed. This game situation can be used to improve intellectual development with: the concept of mapping, the objectivation of operation systems, the verification of hypotheses, and organization principles. (MP)