First-principles learning
Missions
Learn by solving real problems— not memorizing. Every mission reduces to one big idea, and you reason your way to the answer. This is how the world's most demanding schools teach.
🍋
PLAYABLELemonade Stand Tycoon
Run a stand for 5 days and make the most profit.
First principle
Profit = Money In − Money Out
Pricing & ratiosSupply & demandMoney mathDecision-making
Math · Economics · Grades 2–6 10 min
120 XPStart mission
🚀
COMING SOONMars Base Oxygen
Keep the crew alive by reasoning from first principles.
First principle
Oxygen needed = people × days × rate per day
First-principles thinkingMultiplicationResource budgeting
Science · Engineering · Grades 4–6 12 min
140 XPPreview
🌉
COMING SOONBridge Builder
Design a bridge strong enough to hold the load.
First principle
It holds only if Strength ≥ Load
ForcesGeometryTest & iterate
Science · Engineering · Grades 3–6 12 min
130 XPPreview
⚖️
COMING SOONThe Fairness Puzzle
A conundrum with no single right answer — defend your reasoning.
First principle
Reason from your values, not just the rules
DebateReasoningEmpathy
Social Studies · Critical thinking · Grades 3–6 10 min
110 XPPreview