This study was aimed at increasing teachers effectiveness in using their time to improve students achievement. An action research design was employed involving ten IDT elementary schools ten grade-six teachers and 110 grade-six students in Hulu sungai Selatan on the 1995/1996 school year. After three stages of the action research teachers use of time on tasks could be improved teachers violation of time tasks was decreased by 18% and students achevement improved by 0 459.