Keep lots of individually packaged snack foods around the house. "There are no bad foods, just bad portions," says Fernstrom. Try mini boxes of raisins, individually wrapped string cheese, low-fat puddings in single servings... many snacks you buy in the supermarket are now packaged in 100-calorie bags, which is perfect. Just make sure your child doesn't eat five of them in one sitting! If you're buying food that doesn't come in smaller sizes, portion it yourself into plastic baggies so your kid isn't tempted to eat the whole box.

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