Studies the developmental process of how the concepts of ratio and proportion do not develop in isolation, but rather are part of the individual's multiplicative conceptual field, which includes other concepts such as multiplication, division, and rational numbers. Follows one fifth-grade student as he attempts to schematize his…

Discusses importance of symbolic value in teaching. States that students will value something if they perceive the institution values it through a serious commitment of time and resources. Supports the Personal, Social, and Moral Education (PSME) programs in English schools. Focuses on the concept of citizenship by teaching critical thinking. (NL)