When you snack regularly you should also down size you meal portions also - you don't want to snack AND eat huge meals as this will just increase you overall calorie intake and excess will be stored as fat.
Now - lets keep it simple for the kids:
- Eat every 2-3 hours
- Choose healthy snacks and carry them with you
Doesn't sound too hard does it? Remember 'Preparation is the Key' when it comes to healthy eating..