Help your child understand the concept of 1 hour, ½ hour, and 15 minute intervals by using a timer. Begin by using the concept of 1 hour. Help your child set a kitchen timer for 1 hour. It would be good to do this activity at 1:00, 2:00, 3:00, etc. Remind him/her that 60 minutes equals 1 hour. Have your child go about their day with the timer near him or her. When the timer goes off, remind your child that 1 hour has passed. Encourage him/her to look at the clock. If the timer was set at 1:00, the clock will now read 2:00. Repeat this activity two or three more times. Once your child understands how much time is in an hour, try this activity again by setting the timer for 30 minutes and then again with 15 minutes. Your child will soon be able to make connections to how long each concept of time actually is.