Detailed syllabuses from the Ministry of Education and Science (MES) for each grade (1–4).

If you are looking for these materials, they are often hosted on Bulgarian educational portals such as Ucha.se or official resource sites like the Ministry of Education and Science. For specialized versions adapted for international use, sources like Archi-Math offer English-translated Bulgarian math textbooks.

Practice materials for vertical calculations, measurement units (meters, grams, hours), and simple word problems.

Instructional strategies for introducing mathematical concepts like rays, segments, and angles. Key Educational Standards by Grade