Learn
interactive lessons
science/ 5 items
Science · physics, chemistry, biology
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solar-system.md 3D Solar System Explore the planets in 3D. Rotate, zoom, and tap a planet to learn its facts. -
stack.md Stack Stack blocks as high as you can without toppling. A physics game about center of mass and balance. -
chemistry-lab.md Chemistry Lab A 118-element periodic table and a mixing bench: combine elements or ions, discover compounds like NaOH and H₂O, then react what you found. -
periodic-table-quiz.md Periodic Table Quiz Guess element names, symbols, atomic numbers, and categories in 10 multiple-choice questions. From the first 20 elements up to all 118. -
game-of-life.md Game of Life Draw cells on a board, then watch them live, die and be born by three simple rules. Includes famous patterns like the glider and pulsar.
math/ 6 items
Mathematics · numbers, shapes, logic
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memory-match.md Memory Match Train your memory by finding matching pairs: emoji, colors, numbers, uppercase, or lowercase letters. Play solo or take turns with a friend. -
math-race.md Math Race A 60-second mental math quiz: add, subtract, multiply, divide, with three levels, a big numpad, streak bonus, and best score per level. -
tower-of-hanoi.md Tower of Hanoi 3D Move a tower of 3–8 discs to another peg without ever putting a big disc on a smaller one. Shows the 2ⁿ−1 minimum and animates the recursive solution. -
binary-guess.md Binary Number Guess Flip bit cards from 128 down to 1 to make a number, or read the number from the face-up cards. Three levels and a 60-second timer. -
sorting-visualizer.md Sorting Visualizer Watch bars get sorted by bubble, selection, insertion, merge and quick sort, with step counters. Race mode: guess which algorithm is faster. -
arrow-path.glb Arrow Path Place arrows on the board so the monkey reaches the banana, the rabbit the carrot, or the robot the battery. 30 logic levels for kids and grown-ups.
languages/ 0 items
Languages · vocabulary and grammar
Nothing here yet. Coming soon.
entrepreneurship/ 8 items
Entrepreneurship · learn to sell and run a small business
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my-first-stall.md My First Stall Run a small stall: buy ingredients, set your prices, and serve customers. Learn about costs, revenue, and profit in a fun way for kids. -
island-market.md Island Market Rent a kiosk on the World Mode island, restock from the supplier, serve passing customers, and count your profit. Busy spots sell more but cost more to rent. -
business-canvas.md Business Model Canvas Plan a business in 9 simple boxes with guiding questions for students. Saves automatically and can be saved as a PNG image. -
cashier.md Little Cashier Be the shop cashier: add up the shopping and give the right change before the customer loses patience. Pick the answer or build it from Rupiah coins and notes. -
business-quiz.md Business Words Quiz A 10-question quiz on revenue, capital, cost of goods, gross and net profit, cash flow, and profit or loss, with stall examples and an explanation for every answer. -
idea-factory.md Idea Factory Draw problem, customer, and resource cards, then build a business idea. Answer key questions about buyers, price, cost, and how to sell, and save your idea card. -
bargaining.md Bargaining Practise bargaining with a seller or buyer who has a secret price limit. Keep them in a good mood, bargain smartly, and learn when to walk away. -
tycoon-mini.md Tycoon Mini Grow a business from a cart to a kiosk, a shop, and a branch in 20 days. Manage stock, price, ads, a helper, and an emergency fund.
social-studies/ 1 item
History & Geography · maps, events, cultures
