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 series of activities involving comparing weights of objects directly, using non-standard units, using standard units, using simple scales, and using complex scales are described. (SD)

Directions are given for activities designed to help children realize that linear measurement is continuous, that it involves the repeated use of a unit in the same way each time, and that measurement is approximate. Non-standard units as well as standard units are included. (DT)

Activities involving graphing are described. Beginning with arranging objects in linear arrays, the authors outline a sequence of activities leading up to graphing of grouped data, and circular graphs. (SD)

Activities are presented that permit students to gain firsthand experiences with ideas about two-dimensional and three-dimensional shapes and volume that textbook exercises rarely provide. (MP)

Paper folding and coloring activities are presented which involve the use of rectangular and square regions as models for basic fraction concepts. Rules for a fraction game also are included. (DT)

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

A series of activities is suggested for helping children deal with the continuity and order of events in time, with measuring time, and with reading the clock. (DT)

Variations on familiar games which can be used to motivate mathematics learning are described. (SD)

Several activities in which students use geometric shapes and their shadows to study geometric concepts are described. (SD)

Describes activities which involve a four-step approach for using manipulative materials to develop some fundamental concepts in probability and statistics while using ideas about fractions, ratios, proportion, and percentages as an integral part of problem-solving investigations. Steps include introducing the model, establishing a recording…

Activities are described which make use of rectangular arrays as a means of illustrating multiplication facts and the distributive property. (DT)

Defines the concept of problem and notes that primary-grade teachers need to help nurture problem-solving skills. Discusses six practical ways instructors can promote such skills and views the ability and willingness of teachers to transform typical activities into problem-solving opportunities as essential. (MP)

Through a series of puzzles involving many geometric Objects,