Garmoniia:gdz Dlia Tetradi Dlia Samostoiatelnykh Rabot 3 Klass Here

You can find these workbooks at major retailers like OZON or Wildberries .

The "Garmoniya" (Harmony) educational system's workbooks for independent work in 3rd Grade—specifically for Russian Language (by T.V. Koreshkova) and Mathematics (by N.B. Istomina)—are highly regarded for their focus on logical thinking but are often considered challenging without teacher or GDZ (ready-made homework) support. Overview of the Workbook Features You can find these workbooks at major retailers

They contain training exercises designed to improve orthographic and grammatical skills, as well as problem-solving logic and "educational independence". You can find these workbooks at major retailers