This A-to-Z reference is a fun way for elementary-school kids to improve their vocabulary—and become better readers and writers. With 100 Words Every 4th Grad

The latest title in the best-selling 100 Words series offers a fascinating look at the vocabulary of science and technology. Thoughtfully chosen by the editors

This title offers a fascinating look at the vocabulary of science and technology. Thoughtfully chosen by the editors of the American Heritage® Dictionaries, th

This latest installment in the bestselling 100 Word series settles the score on 100 controversies and misconceptions about words with difficult or slippery pron

1970- issued in 2 vols.: v. 1, General reference, social sciences, history, economics, business; v. 2, Fine arts, humanities, science and engineering.