The Active Grammar 1 is for the teaching / learning Portuguese as a Foreign Language (PLE) and Portuguese Second Language (PL2) and covers the main structures of elementary and pre-intermediate levels - A1, A2 and B1. The Active Grammar 1 is not geared to be a book of course PLE / PL2. It is supplementary material to be used in the classroom or at home, and as such, the book should not be worked from beginning to end, following the numerical order of the units; they shall be selected and worked ...