TY - JOUR
T1 - Students' strategies and difficulties
T2 - The case of algebraic inequalities
AU - Tsamir, P.
AU - Almog, N.
PY - 2001
Y1 - 2001
N2 - This article describes a study related to secondary school students' ways of thinking about linear, quadratic, rational and square-root inequalities. Findings show that using graphic representations of parabolas when solving rational and quadratic inequalities usually yielded correct solutions. Difficulties arose when students failed to reject the excluded values or chose inappropriate, logical connectives. The most prevalent source of difficulties was inappropriate analogies between equations and inequalities. The article concludes with some suggested educational implications.
AB - This article describes a study related to secondary school students' ways of thinking about linear, quadratic, rational and square-root inequalities. Findings show that using graphic representations of parabolas when solving rational and quadratic inequalities usually yielded correct solutions. Difficulties arose when students failed to reject the excluded values or chose inappropriate, logical connectives. The most prevalent source of difficulties was inappropriate analogies between equations and inequalities. The article concludes with some suggested educational implications.
UR - http://www.scopus.com/inward/record.url?scp=33746673800&partnerID=8YFLogxK
U2 - 10.1080/00207390110038277
DO - 10.1080/00207390110038277
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AN - SCOPUS:33746673800
SN - 0020-739X
VL - 32
SP - 513
EP - 524
JO - International Journal of Mathematical Education in Science and Technology
JF - International Journal of Mathematical Education in Science and Technology
IS - 4
ER -