The substance of the first grade of elementary school is not only extremely difficult, but also crucial for mastering the Czech language. This publication will help you practice all the pitfalls and difficult grammatical phenomena of our mother tongue, such as inflection, escalating or patterns. It is suitable not only for elementary school pupils, but also for future high school students, for which it is a suitable tool for preparing for secondary school exams. Pupils and students will practice the correct writing of less known or even some foreign words. The book includes the key to exercise and clear tables to repeat the fabric.