This study contributes on instructional methods from a validation technical point of view. The focus is on the evaluation of instructional methods in relation to knowledge processes in the act of learning. In questionnaires, computer science teachers, mathematics teachers, and English teachers evaluated 20 instructional methods in terms of…

This work summarizes the results of two randomized control trails (RCTs) aimed at evaluating the effectiveness of a professional development program for lower secondary school math teachers. The program, called M@t.abel, was financed by the Ministry of Education in Southern Italy with EU funds. It lasts a full school year and it is based on formal…

In this study, we use the US nationally representative Early Childhood Longitudinal Study-Kindergarten Cohort to examine inequalities in opportunities to learn mathematics. Specifically, we examine the characteristics of US students' elementary school math teachers and the instruction they provide. While our findings are consistent with previous…