Originally Posted by Reds Freak
The only thing I like to remind a hitter when he's facing a guy with a little more zip is to make sure he has his front foot down earlier. A swing can't start until your front foot is down and a lot of times kids struggle against a fast pitcher because they don't have their front foot down in time. Get your front foot down early, while keeping your weight evenly distrubted, and throw your hands at the ball.
Now, good luck drilling that into 3rd and 4th graders heads...
This is your answer. Kids swing late on pitches not because they have slow swings but because they are planting their foot and starting their swings late. Get the kids used to having their front foot planted early just before the pitcher is to release the ball.
Like Freak said, at that age body control and mind control can be a bit tough to manage, so some kids might have trouble with timing and balance (and remembering).