Abstract
Studies have shown that many
students make systematic errors
when expanding linear algebraic
brackets. Some of these errors could
be classified as bug s (of a
procedural nature involving an
incorrect routine), but most are
slips (of a careless nature). Many
slips are caused by difficulties
experienced within working
memory. This study investigated
whether the use of a calculator
could reduce the load on working
memory and, subsequently reduce
the number of slips made. A
comparison was made between
students, who had use of
calculators, and students who had
no calculators on bracket expansion
tasks. An analysis of errors found
that the use of a calculator did not
reduce the number of errors or alter
the types of errors made.