A long time ago, people in the sticks and bones engraved mark the way to time.
Later evolved into 12 servings per day, to an ancient Chinese called an hour;
West began to measure time clepsydra to be divided into 24 hours a day;
Because the timing of the need, in the above added a minute, second, provides for one hour is equal to 60 minutes, 1 minute = 60 seconds;
Game intention:
(1) understanding the whole time
(2) understanding of half-time
(3) recognize when a fraction
Understanding of time: There is a clock on the screen, with only hour and minute hands, showing the 5:34 point (given by the background), students fill out the time on the clock, and click OK to submit.