: Study of parts of speech like nouns, adjectives, and numerals.
: Spelling rules and sound analysis.
: For other grades, searching for "ГДЗ Богданова тетрадь [Grade Number]" on educational portals like Resh Skysmart will typically yield step-by-step guides.
: Exercises are designed for the "base level" of mandatory training, while more challenging tasks aimed at an "advanced level" are marked with an asterisk (*).