National Geographic Kids is currently offering some games, quizzes, and offline activity suggestions for Halloween-themed fun. All of the activities are designed for elementary school students. In the quiz section you will find a quiz about Halloween and a quiz about Edgar Allan Poe. The games section offers a Mad Libs like game about Halloween and a “spooky” e-card game. The activities category offers ideas to students and parents for pumpkin carving designs as well as costume designs.
In addition to the National Geographic Kids Halloween resources, I suggest checking out Larry Ferlazzo’s list of Halloween resources.