Abstract
A class of grade 9 students underwent a period of instruction on the use of
concrete materials to represent algebraic expressions and equations and to
solve linear equations. Interviews conducted at the end of the instruction
aimed at studying the students' knowledge of variables and their ability to
solve equations using a variety of methods. In particular cognitive load
theories were used to explain the problems in teaching and learning of
algebra using concrete materials. The hypothesis that the students benefit
from concrete material in algebra is not supported by their use in this study.
B Atweh, GM Boulton-Lewis and TJ Cooper
REPRESENTATIONS AND STRATEGIES IN LINEAR EQUATION SOLUTIONS TAUGHT WITH CONCRETE MATERIALS