Picture a seven-year-old and her first cricket bat. It came home a week before the festival, still in its plastic sleeve. For Ayudha Puja it went on the shelf before Saraswati, next to her school books, with a smear of sandalwood paste and a dot of kumkum on its face. In many homes nothing on that shelf is touched until Vijayadashami, so all day she could only look at it.
On Vijayadashami morning, after the puja, the books came down, and then the bat. She took her stance in the hall the way she'd seen on TV. Her mother rolled a tennis ball along the floor. She missed. She swung again, and the ball went tock off the middle of the bat and under the sofa. In other homes that same morning, a younger child wrote their first letters in a plate of rice. It's called Vidyarambham: the beginning of learning.
Nobody in that house would call the bat and the books two different kinds of learning. They sat on the same shelf for a day. The CricCuts Academy is built on that idea, and it felt like the right week to open it. Belated Saraswati Puja and Vijayadashami wishes to everyone who celebrated. May whatever you start learning this year go well.
One swing, eight subjects
Go back to that swing in the hall. She doesn't know it yet, but a good part of her school timetable is inside it, and each piece is a lesson in the Academy:
A ball off the middle twists the bat, like pushing a door near its hinges instead of at the handle. That twist is torque.
The science of power hittingThe feet. Speed passes up through the hips, trunk, arms and wrists, each part speeding up the next, like the crack of a whip.
Power hitting · Your bodyThe brain doesn't just record what the eyes see. It guesses what will happen next, then checks its guess.
Brain LabThe willow tree's growth rings, one for each year it grew. And why a new bat is knocked in before it meets a hard ball.
Made of the gameOne huge innings can make a player look better than they usually are. The median shows a normal day.
Data LabLight arrives almost at once. Sound travels about 340 m a second, so 68 m away you hear the hit 0.2 s after you see it.
The third umpire's science · mock testsWomen played Test cricket from 1934, but waited until 1976 to play at Lord's.
History & societySince 1 October the Laws allow laminated bats in open-age cricket, and each country's board decides at what level.
The Laws of Cricket, 2026None of it asks her to love physics first. She only has to love the game. That's the bet the Academy makes: a student who cares about the swing will follow it into the science, the maths and the history behind it.
The same idea, from every side
An example makes an idea easy to picture. So each lesson starts from something a student has already seen, and only then gives the idea its name:
Then the Academy shows the same idea from more than one side, because each side makes the next one easier. Follow one idea round the Academy: half a second.
Face the Pace
A reaction drill at 120 to 150 km/h. You find out how short half a second is before anyone gives you a number.
The LabA prediction machine
In under half a second a batter must see the ball, judge it and swing, so the brain guesses ahead and checks its guess.
Brain LabMock test 1, question 1
A ball at 144 km/h travels 40 metres a second, so the 20 m to the batter take half a second.
College mock testsHearing an edge
A thin edge can leave no mark in the pictures, so a microphone in the stump listens. Its sound crosses the pitch in about 0.06 s.
The third umpire's scienceBy the time she meets time = distance ÷ speed in an exam, she has felt it, pictured it and watched the third umpire use it. The formula is just a name for something she already knows.
Why it works. Teachers and researchers call the first part of this concreteness fading: start with something you can touch, move to a picture, then end with the symbols (Fyfe, McNeil, Son and Goldstone reviewed the studies in 2014). The second part is comparison. In studies of people learning to negotiate, those who compared two cases of the same idea side by side were much more likely to use it in a new negotiation than those who studied the same two cases one at a time (Gentner, Loewenstein and Thompson, 2003). And the real world matters for its own sake. In a classroom experiment, ninth-graders who wrote about how their science lessons connected to their own lives became more interested in science and earned better grades, and the students who gained were the ones who had expected to do badly (Hulleman and Harackiewicz, 2009).
Note the catch in the negotiation studies: two cases helped when people compared them, and much less when they read them apart. So the Academy joins its views up. A lesson's ▶ Try it opens the simulator with the setup loaded. The Glossary sends every word back to the lesson that taught it. The mock tests are set in the same cricket as the lessons.
What we haven't done is measure it in our own students. That needs a proper trial with a school, as our post on how we write a lesson says in its list of what we haven't proved.
Fyfe, E. R., McNeil, N. M., Son, J. Y. & Goldstone, R. L. (2014). Concreteness fading in mathematics and science instruction: a systematic review. Educational Psychology Review, 26(1), 9–25. · Gentner, D., Loewenstein, J. & Thompson, L. (2003). Learning and transfer: a general role for analogical encoding. Journal of Educational Psychology, 95(2), 393–408. · Hulleman, C. S. & Harackiewicz, J. M. (2009). Promoting interest and performance in high school science classes. Science, 326(5958), 1410–1412.
What's inside
The Academy began as a small Science Lab beside the highlight editor: three simulators that showed why a ball swings, dips and turns. It's now most of the app. Everything in it is free, needs no account, and keeps your progress on your phone.
Physics you can feel
Spin, swing, power hitting, forces, the bat and ball, the third umpire's tech, the pitch, the weather and the kitbag. Lessons have a Try it button that opens a simulator: change the revs, the seam, the wind or the bat speed and watch the ball's path change.
Train, eat, sleep, breathe
Warm-ups and recovery, food for young cricketers, the body, the mind, breathing and time outdoors, and safety at the crease. Every claim has a source under the lesson. Food by region changes the example meals to your part of India, or to outside India; the advice and the numbers stay the same.
English, and yours one tap away
हिन्दी, मराठी, தமிழ், ಕನ್ನಡ and తెలుగు. Tap a paragraph for your language, show both, or put yours first. The Telugu is written the way a teacher talks, with cricket words left in English. You can even read in a second Indian language, with your own one tap away.
An audiobook that teaches
Your phone reads any lesson aloud in its own offline voice. It keeps your place, keeps going with the screen off, and pauses after a question so you have time to think. A bar at the bottom shows the line being read.
What's new, Learn, the rulebook
About 50 changes, newest first. A 30-step path from watching your first match to playing a club game, with a "coming from baseball" view. All 42 Laws in our own words, one format at a time. Plus an umpiring course and an LBW game.
JEE-style physics, set in cricket
At College level, timed mock tests in the style of JEE Main: +4 / −1, a question palette, mark for review, and a worked solution for every question. Practice we wrote, not official papers.
The eyes, the brain, and design
How a batter reads a ball in half a second, plus spatial reasoning, logic, a growth mindset and a reaction drill against 120–150 km/h, with no IQ or rank. The Art Lab teaches seeing, colour and accessible design through our backdrop scenes, with a contrast checker and a colour-blindness view.
History, data, videos, a glossary
Six courses on cricket's history and society. A Data Lab. More than 150 coaching videos from the people who made them. A Glossary that explains every idea the Academy teaches and opens the lesson that taught it. Offline search, and Continue learning in the menu.
Did you know?
A few things the courses taught us while we wrote them. Each one has its source under the lesson it comes from.
The first Women's Cricket World Cup was played in England in 1973, two years before the first men's World Cup.
The soreness you feel the day after a hard session isn't lactic acid. Your body clears lactic acid soon after you stop, long before the soreness starts.
When footballers aged 15 to 19 sat in cold water after a practice match, they recovered no better than players given a dummy treatment. Sleep, food and water do the real work.
In a trial in China, six schools added a 40-minute outdoor class to every day. Over three years about 30% of their children became short-sighted, against about 40% at six schools that carried on as usual.
Since 1 October, a fielder who jumps from outside the boundary gets one airborne touch, and must then be wholly grounded inside for the rest of the delivery. No more bunny-hop catches.
Chess masters shown a real game for a few seconds could rebuild far more of it than beginners. With the pieces placed at random, most of their advantage disappeared. Experts see chunks: a captain sees "three slips and a gully", not nine separate dots.
What translating it taught us
Putting the Academy into six languages has been the hardest part of building it, and we've written it up as we went, in The batter became thunder and A question before the answer. The short version.
A translator on its own
Every Android phone can download a free offline translator, so the obvious question was: why make language packs at all? We tested it on all 1,102 lines of the Science Lab, in Hindi and Tamil. It finished in 23 seconds, offline. Then we read what it wrote:
| English | Machine translation | Which says |
|---|---|---|
| away from the batter | இடி இருந்து | from the thunder |
| turn off the pitch | पिच को बंद करें | switch off the pitch |
| sweet spot | இனிப்பு ஸ்பாட் | a spot that tastes sweet |
| Top-spin (axis across the pitch) makes it dip. | in Tamil | …it does not dip. The answer to a quiz question, flipped |
| Choose the bat you can swing fastest and most accurately, not the heaviest you can lift. | in Hindi | …the heaviest you can lift. The "not" was gone |
Cricket is written almost entirely in everyday words with special meanings (off, leg, pitch, seam, turn, length, batter), and a translator built for everyday language reads every one the everyday way. A lost "not" is worse: the sentence says the opposite, and nothing looks wrong. Of 35 Tamil lines we read in full, 16 were wrong. None of this is a dig at the translator. A free, offline translator for dozens of languages is remarkable. It's just the wrong tool for teaching cricket to a child who'll believe whatever it says.
What we did instead
- Keep the English word. Cricket and science words stay in English beside the Indian-language sentence. They're the words a student meets in an exam and hears at the nets. (more)
- Write the way people talk. Tanglish and Hinglish, not textbook Tamil and Hindi: the explaining in the student's language, the cricket words in English, the endings joined on (batter-ஐ). Telugu, added this week, is the first language written that way from the start. (more)
- Check the English first. A mistake in the English becomes a mistake in five languages, so the newest courses start in English and wait for a review before they're translated.
- Tie every translation to its English sentence. Each language pack is a phrasebook: the exact English sentence, and its translation. Change one word of the English and the old translation no longer matches. A test flags it, and until it's redone the app shows the English.
- Make the review small enough to happen. A teacher's time is the scarce part, so the language check is 12 key words and 7 lines, the ones we're least sure of first, in about 15 minutes. (more)
The model is the bowler. The harness is the field.
Put a fine bowler on a ground with no field set, no plan and no idea who's batting. They'll still bowl good balls. They won't be the balls this match needs.
Look at that list again. Not one of those fixes is a bigger model. They're all in the layer around it, what AI engineers call the harness: what a model is told before it starts, how much of the text it sees at once, the shape it must answer in, the checks its answer must pass, what it remembers from last time, and the person who signs it off. Here's the same job with and without one:
| The phone's translator, on its own | How our language packs are made | |
|---|---|---|
| Sees | One line at a time | A whole area, lesson by lesson, in order |
| Is told | Nothing but the text | A brief (who's reading, how a teacher sounds), style rules, approved examples, a glossary |
| Answers in | Text in, text out | Each exact English sentence with its translation, every slot like {0} kept |
| Is checked for | Nothing | Numbers unchanged, slots back, the right script, every line covered, and the writer's own flags of doubt |
| Remembers | Nothing | Only lines whose English changed are redone |
| Signed off by | Nobody | A teacher who speaks the language. We're still looking for them: see below |
| Costs | Nothing, and milliseconds a line | Far more per word, but paid once, while we write. The app ships the result and works offline |
The models on the two sides differ too, so it isn't a fair fight. But every problem we fixed, we fixed on the right-hand side.
The voice taught us the same thing. Three fixes, and none of them touched a model:
- A hyphen the voice tripped on. On screen, Tanglish joins an ending to an English word with a hyphen: batter-ஐ. The phone's Tamil voice paused at the hyphen, a long gap in the middle of one word. Without the hyphen (axisஐ) it read only the ending, as "eye". Now the screen keeps the hyphen and the voice gets a plain space.
- Room to think. A teacher stops after asking a question. Our narrator now reads a sentence at a time and waits a second and a half after a question, so the student can answer in their head before the answer comes.
- The voice depends on the phone's brand. Samsung phones use Samsung's own voice, and ours had Hindi but no Marathi. So when the phone's voice lacks a language, the app asks for Google's voice by name.
So, every language?
Not by a translator on the phone. Each language still needs its own pack, but a pack is much cheaper to make than it was: a folder of data, a style guide, one run of the pipeline and one review, and an edit to the English re-runs only the lines it changed. Telugu, added this week, was made that way and now waits for its review. Until a language has a pack, the Academy shows English. Want yours next? Ask for it.
The test app and the data from our translation test are public, so anyone can rerun it, or score another model on the same 1,102 lines: github.com/gklsndr/criccuts-academy-mt-probe.
Help us check it
Young cricketers will believe what these lessons say, so we want every one read by someone who knows the subject. The translations and the health lessons haven't had an expert review yet. We'd be grateful for a read from:
- Hindi, Marathi, Tamil, Kannada and Telugu speakers, especially teachers. About 12 key words and 7 lines per language, the ones we're least sure of first, in about 15 minutes.
- Doctors, dietitians, physiotherapists and counsellors for the training, food, body and mind lessons.
- Physics, chemistry, biology and maths teachers for the science courses and the mock tests.
- Umpires, curators and historians for the Laws, the pitch and the history courses.
You don't need the app. The form at criccuts.com/check shows you the passages, and you can also point at any lesson. In the app, every lesson has a ✎ Suggest a change. Want the Academy in a language we don't have yet? Ask for it here.
Prove us wrong, in public if you like
You don't need to be on that list. If you know a subject, or are willing to research one, check us and tell us where we're wrong. If you simply disagree with something in the app, say so. Disagreeing in public is welcome too: write it up in a blog post, a video or a thread, and send the link to support@criccuts.com. We'll read it.
Every lesson in the app has a feedback button, and we're listening. If you're right, we fix it and tell you what changed, and if you agree, we thank you by name in the app and on this website.
Open the Academy
It's in the CricCuts app, free and offline. If you know a subject or a language, the check takes about 15 minutes, and you don't need the app.
Check a lesson → Get CricCuts Tour the AcademyRelated reading: the batter became thunder (the on-device translation test and its open data), how we write a lesson, build with a genius, ship a machine, and many small models working together. More on the CricCuts blog.
