Focus on foundational structures (A1/A2 level).
However, other publishers like offer an eight-level series titled Grammar Way , where "Book 5" is a standard part of the curriculum. Overview of Grammarway (Express Publishing Series) Grammarway 5 Pdf
The original Grammarway series is a staple for English as a Second Language (ESL) learners. It is designed to take students from beginner to upper-intermediate levels. Focus on foundational structures (A1/A2 level)