Procedures and results of a study involving ability grouping procedures in elementary school mathematics classes are reported. The investigators recommend that within-class ability grouping is practical in departmentalized mathematics classes. (JG)

Tested were the abilities of three- and four-year-olds to match a three-dimensional solid with a color photograph or black line sketch of it. Significant differences were found which indicated that factors of teacher and experience in an instructional unit were influential in the child's performance. (RS)

Skills in sorting objects into sets, matching elements of one set with those of another, and forming subsets from larger collections are extended to show their application to everyday life.

A description is given of a sequence of activities, designed to explore the relationships between members of the parallelogram family, used with a sixth-grade class. (MK)

Four worksheets appropriate for various grade levels 1-8 that can be used to provide experience in classifying numbers according to various attributes are given. (MK)

The author describes a game in which students must determine by asking a small number of questions which of 24 attribute blocks has been chosen. The activity is appropriate for primary children using blocks to keep track of answers, or for older students working mentally. (SD)

Attribute blocks are described, with suggestions for developing sets of attribute materials. Various activities and games are described and illustrated. (MNS)

Four major types of games using two sets of materials (Logical Blocks and word cards) are described: free play with the materials; organization of materials; relations games; and classification by one, two, or three attributes simultaneously. (DT)

Various types of computerized sorting techniques are demonstrated with cardboard materials children can manipulate. Bubble, ripple, and binary sorting are each illustrated. (MNS)

Worksheets for duplication concerned with classification and measure of various geometric shapes are given. (MK)

Ten activities classifying buttons are presented. Additional suggestions are given for using children's literature and for how to begin. (MNS)

The focus is on how reasoning can be developed through the study of two-dimensional shapes, their properties, and the relationships among them. Research on children's understanding of geometric shapes is reviewed and activities to develop analyzing and classifying skills are given, with a bibliography included. (MNS)

Provides instructions and worksheets for activities on: (1) sorting sets (grades K-one); (2) telling place values of two-/three-digit numbers (grades two-four); (3) recognizing multiplication/division facts (grades four-six); and (4) computing problems that contain multiples of 10, place value problems, and subtraction problems with many zeros…

Describes activities for developing pattern recognition and classification using worksheets. The objectives, directions, extensions, and bibliography are provided for each activity. (YP)