Linear and Quadratic Graphs with the Aid of Technology
Department of Science and Mathematics Education, The
This paper describes the trial of
a unit of work on linear and quadratic graphing with six year 10 classes. Two treatments were developed. The computer
treatment made use of the ANUGraph software package,
while the calculator treatment paralleled the computer treatment but used a
combination of previously prepared graphs and graphs constructed by the student
with the aid of a calculator. The emphasis
in both treatments was on the interpretation of graphs related to real
situations. Comparisons between pre-test
and post-test results and interviews with twelve students showed that students
learnt to handle the software proficiently, and that both groups improved on
most of the topics taught. However, the
calculator group seemed to be advantaged by practising
plotting of points by hand. Implications
for future work are discussed.
[1]The research reported in this paper was supported by a grant to all three authors from the Australian Research Council for a project entitled “Development of algebraic concepts and logical reasoning by technology enriched instruction." The authors would like to thank Anne McLennan, Barry Hutton and the teachers and students who participated in the project.