I bet you don't know all the facts and trivia related to Halloween, so before doing any activity with your students related to this holiday, I strongly suggest visiting History channel website, playing the video and reading an interesting article to them in order for them to learn some basic facts about Halloween.
If you are looking for a variety of ready-made Halloween worksheets, this is the place for you! Most of the files are MS Word documents around a common theme, you just need to download and print them out, as easy as that!
This is an interesting way to present Halloween English vocabulary to your students. Real people use Halloween vocabulary in everyday situations. Besides learning some new words, I am absolutely sure your students will have a good laugh.
Teachers sometimes prepare a small Halloween party or arrange a contest. Use this website with 46 different ideas for Halloween costumes or use them as an idea for developing speaking skill, by asking your students to describe people or pets!
Ask your students to create their Halloween e-cards and send them to their friends. This can be a great writing activity and they can also have some fun, because the monster they have chosen for the card background, will read the message to their friend.
I suggest downloading this lesson sheet with a series of elementary writing activities for Halloween lessons. They are for three types of writers: emergent writers, beginning writers, independent writers. Download this and use it in October with your students.