You can find these workbooks at major retailers like OZON or Wildberries .
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
Because the "Harmony" curriculum uses non-standard methods (especially in Russian grammar and math logic), parents often use GDZ sites like Gdz.ru or Euroki not just for answers, but to understand the logic the program expects from the student. " which require deep conceptual understanding.
The tasks often move beyond rote memorization. For instance, the Mathematics workbook (Istomina) includes "My Educational Achievements" and "Visual Geometry," which require deep conceptual understanding. You can find these workbooks at major retailers