Hello Guys!
Practice the time and  have fun.
First check this video from youtube http://www.youtube.com/watch?v=3icBxO6Wjz0

http://www.teachingtime.co.uk/draggames/sthec1.html

http://www.primarygames.com/time/question1.htm

http://www.ictgames.com/hickory4.html