id: 02358792
dt: j
an: 2004b.01674
au: Tarr, James E.
ti: Confounding effects of the phrase ’50-50 chance’ in making conditional
probability judgments.
so: Focus Learn. Probl. Math. 24, No. 4, 35-53 (2002).
py: 2002
pu: Center for Teaching, Learning of Mathematics, Framingham, MA
la: EN
cc: K53 C73
ut:
ci:
li:
ab: The study reports a subset of results from a larger investigation (Tarr,
1997) that sought to determine the impact of probability instruction of
fifth-grade students’ thinking during, immediately following, and
seven weeks after a nine-day instructional program in conditional
probability. The primary objective of the present study was to
determine students’ strategies for describing conditional
probabilities and how these strategies, which included the problematic
use of ’50-50 chance’, changed as the result of probability
instruction.
rv: