Time - Elapsed Time - Basics

This math unit begins with students learning to tell time from analog clocks and express it in words for quarter-hour intervals, enhancing their ability to recognize different clock positions. Next, the unit progresses to calculating elapsed time by teaching students to add and subtract hours from a given time and predict future or past times based on that calculation, using full hours and half-hour increments. The initial focus on adding times provides a foundational understanding, which is then expanded to include more complex scenarios involving quarter-hour and five-minute calculations. Towards the end of the unit, students are introduced to the concept of negative elapsed time, which involves subtracting time to find out how much earlier one time is compared to another. This introduces a higher level of difficulty as students learn to manage and calculate backward time changes effectively, rounding out their skills in both positive and negative time calculations.