
06617798
j
2016e.00908
Batanero, Carmen
Contreras, Jos\'e M.
D\'{\i}az, Carmen
S\'anchez, Ernesto
Prospective teachers' semiotic conflicts in computing probabilities from a twoway table.
Math. Educ. (Ank.) 10, No. 1, 316 (2015).
2015
International Society of Educational Research (iSER), Ankara
EN
K59
probability theory
teaching
teacher education
primary school teachers
subject content knowledge
research
teacher knowledge
knowledge level
simple probability
compound probability
conditional probability
educational diagnosis
assessment
$2\times 2$ tables
semiotics
semiotic conflicts
doi:10.12973/mathedu.2015.101a
Summary: The aim of this research was to assess the common knowledge of elementary probability in a sample of 183 prospective primary school teachers using and openended task, where teachers had to compute simple, compound and conditional probability from data presented in a twoway table. We base on theoretical ideas from the ontosemiotic approach to perform a semiotic analysis, in which we describe the mathematical objects and processes involved in the solutions of the tasks. Participants in the sample showed a weak common knowledge to compute simple, compound and conditional probabilities from a twoway table: they confused simple, compound and conditional probability; exchanged condition and event in conditional probabilities; confused probability and frequency or the union of events with the intersection. The semiotic analysis is used to provide and explanation for these errors in terms of semiotic conflicts. This list of difficulties expands what was found in previous research and may be used to reinforcing the preparation of prospective teachers to teach probability.