Abstract
The purpose of this research is to clarify how many years for the teaching profession teachers have taken to develop their capacities about 13 items of the scale for assessing “the teacher's capacity for giving lessons in arithmetic education” when we classify them according to their experienced years for the teaching profession. As a result of the one factor's analysis of variance for completely randomized design on different data, we clarifyed whole features for the teacher's capacity for giving lessons according to their respective experienced years for the teaching profession and them for it on respective items of 13 items.