Younger children and students with attention weaknesses can easily lose track of time. They might daydream or their minds might wander. Without an external prompt to keep them on track, they could easily let the minutes or hours pass without accomplishing much. Alternatively some students work too fast, and a timer might help them realize that they could not have spent sufficient time to do quality work. While timers might not be necessary for all students and could cause anxiety for others, some students will definitely benefit for a heightened awareness of the time they are spending.
Best-suited for students with weaker: Attention, Cognitive Flexibility, Self-Regulation (Source: Digital Promise Learner Variability Project)