CTRI Learning Hub — Free SSCE Textbooks
Welcome to the CTRI Learning Hub
The Collaborative Tutorial Resources Initiative (CTRI) is building a free, openly available textbook series for Nigerian secondary school students preparing for SSCE examinations — covering WAEC, JAMB and NECO.
Every textbook in the series is:
- Aligned to the official WAEC/JAMB/NECO syllabus
- Written for self-study, without teacher dependency
- Organised into logical themes and chapters
- Released progressively as chapters are completed
- Free to access and download
This page is your starting point. Use the links below to navigate to the subject hub of your choice.
Subjects
| Subject | Hub Page |
|---|---|
| Mathematics | Go to Mathematics Hub |
| Physics | Go to Physics Hub |
| Chemistry | Go to Chemistry Hub |
| Biology | Go to Biology Hub |
| Agricultural Science | Go to Agricultural Science Hub |
Each subject hub contains the full chapter roadmap, current development status, and download links as chapters are released.
How Development Works
CTRI uses a living-document approach. Every chapter moves through the following stages:
| Stage | Version |
|---|---|
| Draft | 0.1 |
| Under Review | 0.5 |
| Published | 1.0 |
| Revised Edition | 1.1, 1.2… |
Chapters are released one at a time as they are completed and reviewed. The subject hub pages are updated with each release.
Get Involved
This textbook series is built openly and collaboratively. We welcome:
- Students — use the materials and send us feedback
- Teachers — review chapters and suggest improvements
- Volunteers — contribute writing, editing or subject expertise
- Educators and organisations — partner with us
📧 hello@ctri.ng
About CTRI
CTRI is an initiative of Care For Knowledge, a Nigeria-based non-profit organisation focused on improving access to quality educational resources.