The Britannica Elementary Encyclopedia is a fascinating reference work instills a look-it-up habit that will prove valuable in school and life. Britannica Student Encyclopedia provides 15,700 entries that are geared to school subjects and presented in a lively style that students enjoy. Enjoy the Merriam-Webster's Dictionary and Thesaurus with 130,000 definitions, synonyms, and antonyms. Plus, Atlas, Timelines, Multimedia, and much more! Also includes the Homework Helpdesk.