A focus of early mathematics education is to build fluency through practice. Several models of skill acquisition have sought to explain the increase in fluency because of practice by modeling both the learning mechanisms driving this speedup and the changes in cognitive processes involved in executing the skill (such as transitioning from…

The understanding of fundamental neurological processes that enables the brain to analyze good learning produces physical changes in brain. The use of several regions of brain in the learning process and problem solving techniques are discussed.

The paper consists of a review of 24 studies on mental retardation published in two Soviet journals between 1970 and 1980. An introductory section focuses on the theoretical framework for mental retardation research in the Soviet Union with a differentiation between oligophrenics (who have organic brain damage) and the intellectually backward (or…