Day 1 · Friday
Write real code — and it moves
Your child builds the game world and a character they control from the keyboard. Not drag-and-drop blocks — real JavaScript, typed by them, running live.
AI-first live STEM platform · Ages 8–18
Your child will buildwhat most adults can't.
A structured curriculum, live expert teaching, and our own platform where kids ship real products to the internet — then present them at Demo Day.
Trusted by parents in 10+ countries · STEM.org Accredited · Built on Harvard CS50 pedagogy
- 26Live student projects you can play
- 7 courses4 levels · ages 8–18
- Max 10Kids per batch, one teacher
- 14-dayFull refund, no questions
Most classes teach kids to watch.We teach them to ship.
The world your child grows up in rewards people who make things. The class should too.
Most coding classes Old way
- Recorded videosPress play and hope it sticks.
- Drag-and-drop foreverFun at 9, a wall at 12.
- Big batches, rotating tutorsNobody really knows your child.
- A certificate at the endPaper, not proof.
The Own Sandbox way Our way
- Live, every class, with AjayQuestions answered while they still matter.
- Real code from week onePython, JavaScript, three.js — not a kids’ version.
- Max 10, one teacher to the endHe knows every child’s project by name.
- A live URL and Demo DayProof they can share — and a standing ovation.
Start this weekend · 9–11 Oct
Three evenings.One game, live.
Fri–Sun, 90 minutes a day, max 10 kids. The cheapest way to find out if this is for your child — and every rupee counts toward a course.
Scroll →
Day 2 · Saturday
Make it their game
Scoring, collisions, lives — then the fun part: every child picks a theme (space, cricket, unicorns, pizza…) so ten kids finish with ten different games.
Day 3 · Sunday
Ship it live + Family Demo Day
The game deploys to their own URL with a QR code — then the family joins the last 15 minutes and watches your child present what they built.
➜ ~/first-game
The ladder · 7 courses · 4 levels
From first code to alaunched product.
Pick a step by age. Every course ends at Demo Day, and every one is a rung toward the next.
Ages 8–10 · 16 wks · 10 projects
CODE STARTER
Ten Scratch projects. Loops to clones. Presented at Show Day.
- Playable game
Ages 11–13 · 16 wks · 12 projects
PYTHON BUILDER
Python fluency. Physics + maths sims. First 3D scene.
- Live URL
- Physics sim
- 3D scene
Side branch · Ages 10–13 · 8 wks · 8 projects
AI CREATOR
A model they trained. A chatbot they built. A nose for AI mistakes.
- AI project
- Mobile app
- Playable game
- Playable game
- Mobile app
- Physics sim
- Open-source PR
- Live URL
- Mobile app
- Real client
- Open-source PR
- Live URL
- Mobile app
- AI project
Ages 15–18 · 12 wks · 9 projects
CAPSTONE
A launched product. Open-source PR. College-ready portfolio.
- Live URL
- Open-source PR
Maths + science built into every project.
Projectile physics in the game, algebra in the visualiser, probability in the AI. Not a separate course — the same code.
Sandbox Studio · our own platform
Your child won’t learn on a sandbox.They'll work in one.
Git, one-push deploys, a personal subdomain for every child, and a moderated cohort workspace with a mentor in every channel.
Push → live URL
➜ ~/solar-system
Every project ships to a real address. Grandparents can open what your child built.
Branch, commit, pull request
mainfeat/bounce-fixPR #12 merged ✓
The same workflow as a professional team. By Capstone, they open a real pull request on an open-source project.
A mentor in every channel
Riyamy ball goes through the floor after the second bounce??
Ajay (mentor)Nice catch. Print `ball.y` each frame — what happens to it right before it disappears?
Riyait goes negative!! so velocity should flip when y < floor
Ajay (mentor)Exactly. That check is the whole bounce. Push it and drop the URL here 🚀
Moderated, kids-only, and Ajay is in it. Stuck at 9 pm on a Tuesday is where the real learning happens.
Student work · 26 live demos
Made by kids.Live on the internet.
Why small groups work · Bloom's 2 Sigma
The research isforty years old.Nobody built for it.
Bloom found that a child taught in a small, mastery-based group lands two standard deviations above the classroom average. The average kid becomes the top kid. That is the whole design.
- Max 10 kidsAjay sees every screen. A question never waits more than a minute.
- Mastery-basedNobody moves on until the thing works. That is what Bloom measured.
- Same teacher throughoutOne person knows exactly where your child got stuck in week 3.
Every class, live, by me[PLACEHOLDER] 45-second hello
Meet the teacher
Ajay Pathak
Founder & the only teacher · STEM.org Accredited curriculum · Built on Harvard CS50 pedagogy · Built Sandbox Studio himself · 10+ countries taught
“I built Own Sandbox because the coding classes I could find for kids were either pre-recorded or taught by whoever was free that week. Neither makes a child a builder.”
So the deal is simple: max 10 kids, me on every call, and the same me from week one to Demo Day. If your child gets stuck at 9 pm, I'm the one in the channel. I'd rather teach a hundred kids properly than a thousand badly.
Credentials
Accredited, certified,safe for kids.
An accredited STEM programme, a curriculum built on Harvard's CS50, and a platform certified child-safe and privacy-compliant.
STEM.orgSTEM Accredited Programme2025
HarvardBuilt on Harvard CS50 Pedagogy2024
Code.orgAligned with Global CS Education Standards2025
HANDCertified Safe Digital Learning Platform2025
KidSafeKidSafe Certified — Child-Safe Content2025%201.webp&w=256&q=75)
COPPACOPPA Compliant — Children’s Privacy Protected2025
Demo Day · the last class of every course
Every courseends here.
Your child stands up in front of 50+ people — parents, grandparents, the cohort, invited judges — and presents the thing they built. Not a certificate. A standing ovation.
- 50+
- in the audience
- Live
- a real product, on a real URL
- Real
- applause, every time
How to start
Three steps.One message.
- 01
Book a FREE demo
One message on WhatsApp. We pick an evening slot in your time zone.
- 02
Your child writes real code
45 minutes, live with Ajay. Something runs on screen before the class ends.
- 03
Enrol — same teacher to Demo Day
Pick the step on the ladder. Max 10 kids, and a full refund in the first 14 days.
100% live online. Your child joins from home with just a laptop and internet — works from India, US, UK, Canada, Australia, UAE, Singapore, New Zealand, South Africa, Ireland, or any English-speaking country. Every class is live with Ajay teaching in real-time. No pre-recorded videos, no self-paced modules.
Maximum 10 students per batch (Capstone runs at 12). This ensures every child gets individual attention, their questions are answered, and their code is reviewed personally.
Not at all. Level 1 CODE STARTER begins with visual programming and Level 2 PYTHON BUILDER starts with Python Turtle — both from absolute zero. The Level 3 tracks assume Python Builder or equivalent, and we place your child after a free demo so nobody starts on the wrong rung.
Full refund within the first 2 weeks if your child decides it's not for them. No questions asked. We want kids who want to be here.
Yes. Students deploy their websites, apps, and projects to real URLs. Parents can share the link with family and friends. This is not a simulation — it's real software engineering.
Yes! We offer a FREE 45-minute demo class where your child writes real code. No slides, no sales pitch — just coding. Book one on WhatsApp and see for yourself.
Join our family
Join our family.Book a FREE trial.
- 14-day full refund
- Flexible scheduling
- Max 10 per batch