All the books
Every CTRI textbook, free to read. A chapter appears as Released only after a person has reviewed and released it.
General Mathematics
Six mini-books that take you from number work and algebra to geometry, trigonometry, statistics and probability.
1 released · 2 in progress · 23 planned
Agricultural Science · SS1 to SS3Agricultural Science
Soil science, crop production, animal husbandry and farm management, in practical, everyday language.
0 released · 0 in progress · 15 planned
Biology · SS1 to SS3Biology
From cells to ecology: the living world, explained for Nigerian learners.
0 released · 0 in progress · 15 planned
Physics · SS1 to SS3Physics
Measurements and mechanics, waves, electricity and modern physics, step by step.
0 released · 0 in progress · 18 planned
Chemistry · SS1 to SS3Chemistry
From atomic structure and bonding to organic chemistry, in a conversational style.
0 released · 0 in progress · 16 planned