Teaching English has never been easier! Each textbook lesson contains a set of learning objectives corresponding with instructional materials that help make lesson planning easier. Our modular curriculum allows your students to start with any unit of a level and go in any order without ever being left behind. This is because the modules (or instructional units) are designed to take advantage of the nonlinear nature of second language learning. Thus, each module is self-contained and independent of the others. Our correlated textbooks allow students to reinforce the concepts taught in their Grammar textbook with corresponding lessons in their Integrated Skills textbook.​