ACES
Taught by Koshy Thomas14,000+ on YouTube

Understand Plus One & Plus Two commerce — not just memorise it.

Free notes, videos, simulations & quizzes for Accountancy, Business Studies and Economics — CBSE and Kerala syllabus. No login. No fee.

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137 chapters2 boards3 subjects
Taught by a real teacher
Koshy Thomas — commerce teacher

Koshy Thomas

Commerce teacher · Kerala · Plus One & Plus Two
Kerala, India14,000+ subscribers

Koshy Thomas, the Kerala commerce teacher behind the YouTube channel that thousands of students already learn from, is the public face of ACES. Chapter drafts are generated with AI assistance and checked in separate verification passes; the process is on our Sources page.

Koshy Thomas Online Classes
Try it now — no login needed

See how a transaction becomes a trial balance.

Walk through a real accounting cycle — Transactions → Journal → Ledger → Trial Balance — in under two minutes.

Try it yourself

The Accounting Cycle

Every business starts with real-world events — buying, selling, paying, receiving. Each event is a transaction. Below are four transactions for a small shop. Reveal them one by one, then move to the Journal.

#1Started shop with ₹1,00,000 cash
#2Bought goods for ₹30,000 in cash
#3Sold goods for ₹50,000 in cash
#4Paid shop rent ₹8,000 in cash

Reveal all 4 transactions to proceed.

What's inside

What you get in every chapter

Beyond reading — the tools that make concepts stick.

Evidence-backed

Worked examples, one step at a time

Every chapter front-loads a fully solved problem with steps revealed one at a time — the approach shown to halve learning time in tutor research.

137 chapters

Built for CBSE & Kerala — chapter by chapter

All 137 chapters aligned to your exact board syllabus — CBSE NCERT or Kerala SCERT. Indian examples throughout. No login, no fee.

Guided hints

A tutor that never spoils the answer

Stuck? Three escalating hints. Each one points at a rule or asks you to notice a contradiction. None of them tell you the answer — that's the whole point.

How it fits

Use ACES with school, not instead of it

Your teacher does what we can't. We do what they can't — replay any concept until it clicks.

Pace
In the classroom
Same speed for 60 students.
With ACES alongside
You set the pace. Pause, replay, post the entry three times.
Mistakes
In the classroom
Marked wrong, move on.
With ACES alongside
A wrong journal entry triggers a hint, not a red mark. The ratio reacts on screen.
Examples
In the classroom
Few worked problems, mostly from the textbook.
With ACES alongside
Indian-context worked example on every chapter; interactive simulations to live through.
When you get stuck
In the classroom
Wait for the next class, or guess.
With ACES alongside
Three-level graduated hints. None tells you the answer; all get you closer.
Revision
In the classroom
Re-read the chapter, hope it sticks.
With ACES alongside
Interactive simulations, worked examples, practice sets — replay any concept until it clicks.
FAQ

Common questions

  • Yes. Every chapter, every simulation, every practice set. We run a small number of unobtrusive ads (Google AdSense) to cover the cost of running the site. You do not need to log in or sign up.
  • No. ACES is an independent learning platform. We follow the public Higher Secondary commerce syllabi as specifications — what topics to teach, at what depth — and write all content independently from scratch.
  • Class 11 and Class 12 commerce stream — Accountancy, Business Studies, and Economics — for two boards: CBSE (NCERT-aligned) and Kerala HSE (SCERT-aligned). 137 chapters in total across both boards.
  • Every chapter goes through a verification pass, including its practice answers. If a chapter is still being re-checked, it carries an "Under review" badge, so you can see its status.
  • ACES is a powerful supplement, not a substitute. For board exams, you should still cross-check key topics with your prescribed textbook and your teacher. Use ACES for the interactive parts — the journal entries, the ledger simulation, the practice sets — that the textbook can't give you.
  • Those platforms are mostly video lectures plus past-year question banks. ACES is interactive: you post the journal entries yourself, you watch the ledger update in real time, you work through graduated hints until the concept clicks. Different shape, different muscles trained.
  • Each chapter has graduated-hint chains tied to specific misconceptions. Click for a hint and you get a nudge towards the right rule. Click again and you get a re-framing question. Click a third time and you get a small step. At no point does the tutor reveal the final answer — by design.
  • We do not require login. In-page interaction events stay in your browser's session storage. Aggregate, anonymised usage is recorded via Google Analytics. See our Privacy Policy for the full plain-English version.
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137 chapters · 3 subjects · CBSE & Kerala · Free forever