Resheba.ru provides a comprehensive repository of готовые домашние задания (GDZ) for 4th-grade students in the CIS region, covering key subjects like mathematics (Moro, Petersen), Russian language (Kanakina), and English (Spotlight, Rainbow English). The platform supports primary education with step-by-step solutions for textbooks and workbooks, designed to assist with self-correction and understanding complex topics. You can explore the 4th-grade materials directly on the Resheba.ru website.