The author argues that a knowledge of mathematical structure is only helpful to the high ability student. (MM)

A summary of the contents of a Chinese mathematics book written in the third century. (MM)

A series of classroom activities involving the metric system. (MM)

A discussion of the various algorithms used for multiplication. Repeated addition, arrays, the distributive law, Egyptian and Russian Peasant Multiplication, Gelosia, Napier's Rods and Genaille's Rods are all described, and examples of multiplying using each method are explained. (DT)

The author compared the relative efficiency of three methods of presenting and teaching fractions to slow learners in secondary school: formal-traditional method, cuisenaire (unimodel) material, and specially prepared multi-model materials; multi-model materials were found to be the most effective method. (Author/AN)

The author introduces mathematical activities designed to give students practice in computation. (MF)

Students use a spinner device to generate numbers, which they then insert into given open sentences and search for true statements. (MM)

This column contains brief notes on an unusual binary operation; calculating compound interest rates; costing a book; the m-th root of a positive integer; and an arithmetical puzzle. (MM)

Early experience with grouping objects is valuable for later understanding of and work with place value, division, and multiplication. Examples are drawn from the Developing Mathematical Processes Curriculum Project at the Wisconsin Research and Development Center for Cognitive Learning. (RS)

Discussed is the coordination of the study of arithmetic and space science in the elementary school program. (CT)