Presented are 13 activities designed to help young students learn and understand the order of events, by leading them to realize that time sequence is part of their everyday lives. (KC)

Described are a discrete group of isometries that fix a line but do not stabilize a point. Each type is accompanied by an example of their representation in concrete form which served as material on which young children could operate. Pupil responses to each situation are provided. (CW)

Seriation, or serial ordering, is a type of classification involving the arrangement of items according to how much of a specific property they possess. Presents several activities for teaching seriation to preschool and kindergarten children. (PR)

This booklet describes basic counting principles and provides activities designed to develop basic skills in: (l) stable ordering; (2) one-to-one matching; (3) total number; (4) different objects; and (5) different order. These are extended to more advanced strategies aimed at building counting skills strong enough to provide a basis for adding,…

This month's investigations deal with patterns and the importance of looking at data from more than a single perspective. The investigations focus upon ordering animals in some way. Includes reproducible student worksheets. (MKR)

A method for helping students to find formulas involving symmetry under various conditions is explained. Necklace symmetries, orbit counting, tetrahedra and cubes, relationship patterns, and finding patterns are discussed. (CW)

Noticing relationships between similar things and developing rules for treating things the same or differently, based on characteristics like color, size, shape, and texture provides the basis of beginning mathematics learning. Based on the view that teachers and parents of young children should provide children with age-appropriate words,…