A brief article stressing the need for care and accuracy in selecting materials to be used in teaching metrication. Caution should be taken in readability and interpretable rulings. (Author/EB)

Presents an introductory activity in the use of arbitrary measuring units, using simple materials found in school or at home. Materials are listed and activities provided. (EB)

Describes a method used to introduce the metric system to five year olds. Suggestions and necessary materials are included. (EB)

Describes development of units to teach measuring skills using manipulative materials. Concepts fostered include repetition of identical units, comparison, and standardized units. Descriptions of activities on length and area and mass are given, as well as references for additional activities. (JM)

Discusses the history and evolution of measurement standards from 3000 BC to the modern metric system. Traces measurement techniques from comparisons with the human body to use of atomic clocks and lasers to establish the length of a meter. (JM)