Discusses assumptions implicit in any system of measurement. Describes a three-rectangle problem designed to help children explore additivity of areas and relationships between area and shape. Suggests ideas for action research. (FDR)

A system of area measurement developed for the isometric geoboard is used to justify some relationships that are often proved using square units of area. (Author/MK)

Mnemonic devices to aid in the teaching of perimeter and circumference are suggested. (MK)

Discusses an activity using lined paper and rulers to discover and prove the triangle proportionality theorem. (MKR)

Presents activities which use patterns on geoboards or dot paper to develop geometry and measurement concepts. Includes reproducible student worksheets. (MKR)

Presents a cooperative-learning lesson in which high school students visit stations equipped with different tools to establish the midpoint of a Pixy Stix, a brand of candy-filled straw. Provides solutions for two potential stations, suggestions to extend the activity, and two activity worksheets. (MDH)

Presents 5 activities for the family and K-1, 2-3, 4-5, and 6-8 grade levels that focus on the connection between mathematics and children's literature. Activities examine the mathematical concepts of sorting, classifying, geometry, estimation, averages, and measurement. Provides reproducible worksheets. (JAF)