id: 02340054
dt: j
an: 2001c.02039
au: Stump, Sheryl L.
ti: High school precalculus studentsâ€™ understanding of slope as measure.
so: Sch. Sci. Math. 101, No. 2, 81-89 (2001).
py: 2001
pu: Wiley (Wiley-Blackwell), Hoboken, NJ; School Science and Mathematics
Association (SSMA), Stillwater, OK
la: EN
cc: C33
ut:
ci:
li: doi:10.1111/j.1949-8594.2001.tb18009.x
ab: Twenty-two high school precalculus students were interviewed to examine
their understanding of slope as measure. The students examined and
discussed real-world situations involving slope: Physical situations
involving slope as a measure of steepness and functional situations
involving slope as a measure of rate of change. For the various
physical situations, students measured steepness with angles instead of
ratios. Overall, they demonstrated a better understanding of slope in
functional situations, but many students had trouble interpreting slope
as a measure of rate of change. Instruction should focus on helping
students form connections and providing opportunities for students to
communicate their understanding. (authorâ€™s abstract)
rv: