A theorem on divisibility in decimal and non-decimal numeration systems is developed; its use in a series of discovery-centered lessons is suggested. (DT)

Utilizes two interpretations for the positive and negative signs to demonstrate how multiplication and division involving negative numbers can be represented and their inverse nature illustrated. (RP)

From his knowledge of the brain and learning, the author argues that Horace Mann's classroom system is the core cause for the outdated state of public education and attendant problems. He asserts that the conventional classroom is brain-antagonistic and the continued use of graded classrooms, ruinous. (Author/WD)

In 1978, Thailand adopted a six-year plan to reform curricular structure. Under the new plan, public schooling would be broken down into a 6-3-3 structure; six years at elementary level, and three each at lower and upper secondary levels. Staff of teacher education institutions acted as inservice trainers. (RJG)

The article presents a general test for divisibility that includes composite numbers and shows that such a test can be used to determine divisibility by several numbers simultaneously. (MK)

Suggestions for teaching the concept of division by zero are given. (MK)

Explores written calculation methods for division used by pupils in England (n=276) and the Netherlands (n=259). Analyses informal strategies and identifies progression towards more structured procedures that result from different teaching approaches. Comparison of methods used shows greater success in the Dutch approach which is based on…

Explores young children's intuitive strategies for partitioning sets of objects. (Author/NB)

Limitations in children's understanding of the symbols of arithmetic may inhibit choice of appropriate solution procedures. The teacher's role involves negotiation of new meanings for words and symbols to match extensions to solution procedures. (MKR)