Here's a grammar application program that helps prevent the
five most common usage problems in the English language.
Give your children a clear understanding of subject-verb
agreement, personal pronoun functions, interrogative
pronouns, comparatives and superlatives, and troublesome
words (like good/well). Includes a student workbook with
worksheets, tests, and quizzes; teacher's manual; and
exercise cards. Note: This program is to be used any time
after completing the Basic curriculum.