Best name for a grammar book

An organization called K12 Teaching is advertising a book apparently entitled,

Daily Skill Builders - Gramar [sic] and Usage 4-5.

Do you suppose the book teaches spelling?

It is perhaps rivaled only by this line from "The Writing Process and Technical Writing" on Georgia Southern University's web site [emphasis in original]:

Ensure gramar [sic], punctuation, spelling, format, etc., are perfect and appropriate for the medium, purpose, occasion, and audience.

Oops.