computational estimation

Charalambos Lemonidis, Anastasia Kaimakami: Prospective elementary teachers’ knowledge in computational estimation

Computational estimations besides their application in everyday life they help students to acquire the number sense and the deeper understanding of the functions. In the present research we examined, by personal interviews, the abilities in computational estimation of 50 prospective elementary Greek teachers. It seems that a large percentage of teachers do not know to use computational estimation and resort to accurate estimations as well as using written algorithms. In addition, prospective teachers do not know to use the strategies of averaging and compatible numbers.