Mathematics has been challenging subject to be taught. The used of technology aids teaching practices, which one is the use of laptop as digital device, which further could be varied depending on subject matter. So, it is important to find-out factors relating laptop to teaching practices, especially in Mathematics. Hence, this study identified the determiners of Mathematics teaching practices out from its association with the laptop utilization and competency of Mathematics public secondary school teachers from the National High Schools in the Schools Districts of Bohol, Philippines. Employing correlational survey design, data were gathered using a valid and reliable online survey from 108 teachers of 20 sample schools chosen by two-stage random sampling. Percentages and descriptives on the respondents’ distribution on level of laptop utilization and competency to level of mathematics teaching practices suggest positive association. Furthermore, bootstrapped multiple regression analysis revealed that laptop utilization and laptop competency determines Mathematics teaching practices. Thus, capacitating the teachers on the how to fully utilize laptops and strengthening their competencies is a great help to uphold teaching practices, particularly in Mathematics.