: Platforms like KION Stroki and Aldebaran allow you to read the material online.

While "GDZ" (pre-solved answers) for this specific series are less common than for standard textbooks, you can access the material through various digital platforms:

: You can find descriptions and purchase options on the AST Publisher's website .

: The manual covers the entire 3rd-grade curriculum, focusing on orthography and punctuation.

If you are looking for specific rules to practice, the manual typically includes: Unstressed vowels in word roots. Spelling of prefixes and suffixes. The use of hard and soft signs (Ъ and Ь). Parts of speech: nouns, adjectives, and verbs.