No classroom should ever be without a dictionary or thesaurus. These teaching aids are instrumental no matter what subject you teach. All children should learn how to use these reference books and get into the habit of using them instead of asking the teacher any correct spelling. Merriam-Webster and American Heritage make excellent reference books for school use. American Heritage even has a pre-school dictionary, “My Very Own Bit Dictionary”. Give your students the power to find answers on their own by keeping a dictionary and thesaurus in an accessible, easy to see place in your classroom.