Exam questions for every subject, grades 7-12, with step-by-step solutions
with easy-to-follow Thai voice narration
Mathematics
Grade 8 · Linear equations
If 2x + 5 = 17, what is the value of x?
Correct!
View step-by-step explanation
A learning system designed for students — practice problems and understand them on your own
Not just the answer — it explains every step like a tutor sitting beside you, with Thai voice narration
Practice questions in the same format and difficulty as the real exam — timed, so you get used to exam-like conditions before the big day
View progress in charts, identify weak points, and get recommendations on what to practice next
Math, physics, and chemistry formulas displayed clearly and beautifully, just like in textbooks
The system reads explanations in a natural Thai voice, like a teacher explaining in person, helping students who learn by listening
Math, Science, Physics, Chemistry, Biology, Thai, English, and Social Studies, aligned with the core curriculum
Nothing extra to install — works on any device
Pick the subject you want to practice, choose grade 7-12, and the difficulty (Easy / Medium / Hard)
Read the question, choose an answer, and submit — the system checks instantly whether you're right or wrong and saves your result automatically
Tap to view the solution and it walks you through every step, with voice narration — review it as many times as you like
At first I was completely lost on math problems and couldn't tell where I'd gone wrong. Going through the solution step by step helped me understand the approach, and now I can solve similar problems on my own much more
Pui Pimnipa
Grade 10 student · Bangkok
I love the voice narration. Reading physics formulas on my own was confusing, but once I listened to the step-by-step explanation alongside the animation, I started to picture when to use each formula
Kong Kittiwat
Grade 11 student · Bangkok
My mom couldn't afford a private tutor, so I tried practicing on my own with KruWai. Chemistry problems I couldn't do before started to click once I practiced them often with detailed solutions
Nun Warisara
Grade 10 student · Chonburi
Everything you want to know about KruWai
KruWai is a personal tutor for students in grades 7-12. It offers exam questions in every subject with step-by-step solutions, Thai voice narration, and animations that explain concepts as clearly as a tutor sitting right beside you.
Yes, you can start for free. Sign up right away with no credit card and no commitment, then practice questions and view step-by-step solutions immediately.
It covers 8 core subjects aligned with the national curriculum: Mathematics, Science, Physics, Chemistry, Biology, Thai, English, and Social Studies, from grade 7 to grade 12.
Yes. KruWai runs in a web browser with no app to install, and works on phones, tablets, and computers.
It lets you practice questions repeatedly with detailed solutions — great for class scores, midterms, finals, and university entrance exams — plus a dashboard that tracks your weak points by subject.
Sign up free and start practicing right away
No credit card required · No commitment
Now open free for students across Thailand
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