For secondary students
Understand the topic. Practise the paper. Know what to work on next.
KaratuAI helps you learn from your curriculum, ask questions when something does not make sense, practise with exam-style questions and turn your own notes into lessons.
2 free lessons · No credit card required
Completing the square
Let’s turn x² + 6x into a perfect square. What number would you add to finish it?
9? Half of 6 is 3, and 3² is 9.
Exactly. So x² + 6x + 9 = (x + 3)². Ready to try one yourself?
x² + 10x + ? = (x + ?)²
Built around what you’re actually studying.
Learn from your curriculum and practise for the exams you plan to sit.
West Africa
- WAEC
- NECO
- JAMB (UTME)
- NABTEB
UK and international
- GCSE
- Cambridge IGCSE
English language
- IELTS
Also explore African regional curricula, including KCSE, REB, UNEB and CAPS, in the full library.
Explore exam practiceHow a study session works
Learn it. Practise it. See what’s next.
- 1
Learn
Start with a topic from your syllabus. Ask Karatu a question, and get another explanation if the first one doesn’t click.
- 2
Practise
Answer exam-style questions yourself. Review explanations and the work behind your answers.
- 3
Improve
Look at your practice results, revisit what was difficult and try a fresh question.
AI classroom · Try a sample
An AI tutor should do more than give you the answer.
Meet Karatu, your AI tutor. Ask a question, get another explanation, try the idea yourself and keep going until it makes sense.
1 · Ask Interactive example
Why does multiplying two negatives give a positive?
Turn around · 1 of 3
Multiplying by −1 reverses a number’s direction. Four groups of −3 give −12. Taking the opposite of those four groups gives +12.
This short example is prepared for you to explore. Open a sample classroom to experience a lesson.
Exam practice
Practise the exam you plan to sit.
Choose your exam or curriculum, take timed practice, review explanations and return to the questions that still need work.
- 01
Choose. Select the exam, subject and paper.
- 02
Practise. Take timed or untimed questions in a focused session.
- 03
Review. See your results and review the explanations.
- 04
Improve. Revisit a difficult idea, then try again.
28 / 40
Review your answers
Question 1 · Algebra
CorrectQuestion 8 · Statistics
CorrectQuestion 12 · Geometry
Review explanationQuestion 19 · Mensuration
Try another exampleRevisit how to find the area of a cylinder.
Open a lessonIllustrative results from a practice session, not a measure of exam readiness.
Photo of handwritten notes · Example
What would you like to focus on?
Your material helps prepare your lesson.
Example lesson focus
Learn this: PhotosynthesisNotes to lesson
Turn your notes into a lesson.
Upload a PDF, class notes or a photo of handwritten work. KaratuAI turns it into a structured lesson with explanations, practice and revision.
Choose your focus: tell Karatu what you want to understand or revisit when you upload your notes.
Progress
Know what to revisit next.
KaratuAI records lesson activity and recent practice checks. Look back at what you tried, the help you used and the ideas that need another attempt.
Parents can follow along. With a family account, parents see each learner’s activity and recent learning observations.
For parentsQuadratic equations
- You completed a factorisation example.
- You used a hint for completing the square.
Practice observations describe the task you tried, not overall mastery.
featured exam and curriculum options, plus more in the library
free lessons to start, no credit card needed
guided practice asks you to try before offering the next step
Start with 2 free lessons.
No credit card required. A parent or guardian can choose and manage a plan when you’re ready.
Family plans from —/month for one learner.
Questions students ask
Which exams can I prepare for?
Featured options include WAEC, NECO, JAMB (UTME), NABTEB, GCSE, Cambridge IGCSE and IELTS. The full practice library also includes regional curricula across Africa. These are practice materials, not official exam papers or an endorsement by an exam body.
Does KaratuAI just give me the answers?
Lessons explain concepts and show worked examples. Guided practice asks you to try, offers hints and gives you another attempt before revealing an explanation. The aim is to help you do the work yourself.
Can I use my own notes?
Yes. Upload a PDF or a JPG, PNG or WebP photo through Notes to lesson. Add what you want to focus on, then prepare a lesson from your material. See our privacy policy for how uploaded information is processed.
Can my parents see my progress?
With a family account, parents can see lesson activity, learning time and recent practice observations for each learner profile. These summaries describe recorded work and support used; they are not a guarantee of mastery.
Is it free?
Start with two free lesson generations, with no credit card required. Sample classrooms do not use your free generations. Paid Basic, Family and Premium plans offer one, three or five learner profiles.
Do I need a special device?
Use a modern browser on a phone, tablet or computer. No VR headset is needed. An internet connection is required for new lessons and live AI help; saved offline lessons have more limited features.
Your next lesson
Start with the topic that’s been bothering you.
2 free lessons · No credit card required