The world's most trusted grammar source for clear, direct, and comprehensive instruction, theAzar-Hagen Grammar Series takes a time-tested approach that blends direct grammar instructionwith carefully sequenced practice to develop all language skills. Grammar is the springboard fordeveloping all language skills: speaking, listening, reading, and writing. With clear, user-friendlycharts and engaging interactive practice, it's easy to see why this classic series remains the top-sellingtext in its field year after year.