This series of grammar exercises for grades 4 to 6 was developed after discussions with American Saturday school teachers as well as observations of children during classes and exams.

Because of that, it can be used as an addition to any reader. The grammatical material within the series is presented according to the principles of glottodidactics ‒ a discipline concerned with teaching foreign languages. The books are addressed mainly to students who have at least elementary knowledge of Polish language. They also allow the students who use Polish primarily at home to better organize their grammatical knowledge and gain skills necessary for correcting mistakes.