Simple discipline technique - being positive! I used to give time-out after time-out and this is more effective for my 6-year-old. I count 1-2-3 before moving his name down to give him a chance to correct. And an end-of-day reward is great incentive to stay in the 'Happy zone'.
I really love this discipline chart. More detailed than smiley faces, the kids can go up or down with their clothespins in class and then it's a great way to communicate with the parents in their take home folder every day.