The Oxford Advanced American Dictionary helps students understand the meanings of words and how to use them correctly. It includes 145,000 words, phrases and meanings and 85,500 examples to show how words are used. It marks the Oxford 3000 words (the most important words to know in English) and Academic Word List words (the words you need to study in English). The Oxford Writing Tutor (included in the print dictionary) and the Oxford iWriter on the CD-ROM show students how to plan, write and review different types of writing. The Oxford American Dictionary Vocabulary Builder, available separately, provides 50 lessons with 130 activities to consolidate and extend vocabulary.