The importance of having children manipulate small objects that can be grouped, arranged, and counted is discussed. Learning activities for one-to-one correspondence, numerals, and the four operations are given. (MNS)

Using squared paper as a concrete aid, children can explore important concepts about the perimeter and area of geometric figures. Activities are described and illustrated to develop several methods of finding perimeter and area. (MNS)

Activities involving spinners and dice are presented. Making the materials is noted, followed by activities on counting, computation, probability, fractions, and other ideas. (MNS)

Activities using paper punches are described, dealing with one-to-one correspondence, place value, large numbers, prime and composite numbers, operations, geometric shapes, and measurement. (MNS)

Number walks are suggested as reinforcement activities for newly learned concepts. Children walk along a display of mathematical tasks, responding to each as they walk along. (MP)

Many learning activities designed to make metric measurement meaningful to children are described. The manufacture and use of play dough is featured. Several simple recipes for preparing dough are included. (MP)

Preservice elementary teachers worked cooperatively to explore the relationship between the measure of the central angle and the number of sides of regular polygons using the reflection of a line in a hinged mirror. The experience involved conjecture and experimentation, communication, and building connections between science, geometry, and…