Applications of Grammar: Book 4 is designed as a review of the basic elements of effective writing and a reinforcement of the fundamentals of grammar. This course is essentially divided in two parts—composition and grammar. The first part emphasizes the thinking process and develops a sound writing strategy. These basic elements of effective writing are then applied to writing an essay, a research paper, and an article of opinion. The second part focuses on grammar, highlighting various grammatical issues that are challenging or prone to errors. Materials include a workbook, teacher’s manual, and fifteen tests, all published by Christian Liberty Press. Students are required to complete the workbook exercises and all tests. Prerequisite: Applications of Grammar: Book 3 (or equivalent).