Telling Time- Duration Half Hour

Elapsed Time — Half Hours

Practice finding new times using half-hour increments with questions like “It is 3:30. What time will it be in 2½ hours?” and “It is 7:00. What time was it 3½ hours ago?”

⭐ Student Tips

• A half hour = 30 minutes.

• Will it be in … → add that many hours/half-hours.

• Was it … ago → subtract.

• Remember to wrap past 12 (e.g., 11:30 in 2½ hours → 2:00).

📘 Teaching Instruction

• Model with clock jumps of 30 minutes.

• Use both o’clock and :30 start times.

• Stress half-hour language: “2½ hours = 2 hours + 30 minutes.”

• Spiral with hour-only and half-hour questions for fluency.