Finding a Starting time by using Time-Line.

Since there are not many lessons or videos available to teach ,how to find a starting time,by subtracting duration from

ending time.Here ,with the help of my student Natasha Loh,

I am proudly presenting my first video clip in teaching.

You can watch some basic previous videos to learn more about time.

The problem is not so clear on the video.So I re-write it again.

I went to school this morning.It took 1 hour and 35 minutes to

arrive at the school.I reached my school at 9.00 am.What time did I leave my house ?

Please continue by clicking the presentation by Natasha loh.

Thank's for the best teaching video by Natasha Loh.

Keep up with the good work.