Radio lessons for Grade 10 and Grade 11, broadcast in 2021 by the provincial Gurugedara radio schools (ගුරුගෙදර රේඩියෝ ඉස්කෝලේ) and archived here with their activity sheets. Free to listen and download.
1180 lessons · 48 subjects · 4 provinces · 190 activity sheets
670 lessons across 26 subjects See grade 10 →
510 lessons across 22 subjects See grade 11 →
During the 2021 school closures each province ran its own radio school — Ruhunu, Kandurata, Uva and Rajarata — teaching the same national syllabus with its own teachers. All four are archived here, so a unit you find hard in one province's lesson can be heard again from another.
Audio is re-encoded to 48 kbps mono, roughly a third of the original size, so a full lesson costs about 6 MB of mobile data instead of 20.