When we teach children how to tell the time, we start by looking at the hands of the clock and o'clock times. This will take a while for children to completely grasp, so it is best to have short activities often.
Telling the time can be quite tricky but can taught in fun ways. Throughout the day, you could ask children to check the clock and to tell you what time it is. If you have chalk, you could make a big clock outside with children to help them with their understanding.
When children have perfected o'clock times, you can start looking a half past times.