DiscreteQuest Play — discrete math in your browser — Spark & Anvil

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Graph Explorer Trace the Seven Bridges of Königsberg — walk nodes and edges to see what a path can and cannot do.

Counting Lab Work out permutations, combinations, and the pigeonhole principle — count without listing.

Mixed Practice A short round across the kits you have played — spaced so it sticks.

Discrete Duel Play a friend on one device — same questions, highest first-try score wins.

All activities

Explore & count

Graph Explorer Trace the Seven Bridges of Königsberg — walk nodes and edges and discover why some walks are impossible. Cube Cover Slide a cube to cover every tile once and reach the flag — a Hamiltonian path, the graph-theory twin of the Euler walks in the Graph Explorer. Counting Lab Permutations, combinations, and the pigeonhole principle — count the possibilities without listing them all. Truth-Table Lab Propositional logic made visible — predict whether a formula (AND, OR, NOT, if-then) is always true, always false, or sometimes true, then see the whole truth table. De Morgan, the contrapositive, and the if-then surprise.

Learn & practice

Mixed Practice A short round across the kits you have played — brought back to make it stick. Trick Questions Brain-teasers with a twist — spot why the obvious answer is a trap. Teach the Cast Teach a discrete-math idea to a cast member still learning it — teaching makes it stick.

Play together

Discrete Duel 2–4 players take turns on one device — same questions, highest first-try score wins. Adventure Map A progression trail through every kit — clear each stop of real practice, then move on. Progress Your levels, days active, and how each track is coming along — saved on this device. Progress report For grown-ups — a private on-device snapshot mapped to the skill areas. Export a CSV or print.

Concept Kits — 16 kits of discrete math

From the foundations up through counting, logic & graphs, recursion, and number theory — a short round with a hint whenever you get stuck. Progress stays on this device.

Kit 1: Sets and Sorting Foundations · 4-5 · 25 questions Kit 2: Counting and Patterns Counting & Combinatorics · 4-5 · 25 questions Kit 3: Logic and Truth Tables Logic & Graphs · 5-6 · 25 questions Kit 4: Graph Theory Basics Logic & Graphs · 5-6 · 25 questions Kit 5: Combinatorics and Probability Counting & Combinatorics · 6-7 · 25 questions Kit 6: Recursion and Sequences Recursion, Number Theory & Algorithms · 6-7 · 25 questions Kit 7: Number Theory and Cryptography Logic & Graphs · 7-8 · 25 questions Kit 8: Algorithm Design and Complexity Recursion, Number Theory & Algorithms · 7-8 · 25 questions Kit 9: Elements & Principles Deep Dive Connections & Real-World · 5-6 · 25 questions Kit 10: Cultural & Historical Context Connections & Real-World · 6-7 · 25 questions Kit 11: Creative Process & Critique Connections & Real-World · 6-7 · 25 questions Kit 12: Professional Practice & Careers Connections & Real-World · 7-8 · 25 questions Kit 13: Cross-Topic Connections Connections & Real-World · 5-6 · 25 questions Kit 14: Real-World Applications Connections & Real-World · 6-7 · 25 questions Kit 15: Misconceptions & Reasoning Connections & Real-World · 6-7 · 25 questions Kit 16: Advanced Synthesis Connections & Real-World · 7-8 · 25 questions

More ways to play

Quiz Arena Discrete Run Run 100×

Same idea, another world

Something you practice here shows up somewhere else too — that's real learning that travels.

Multiplying the number of choices at each step is exactly how you count the total outcomes behind a probability. The shared idea: counting the outcomes — the fundamental counting principle (multiply the choices at each step) is exactly how you count all the outcomes to get a probability Try ChanceForge →

DiscreteQuest mascot

Meet the cast — the characters who teach this

Each one stands for an idea you’ll practice. Tap a character to read their illustrated story and hear their audio drama.

Ensemble stories — the cast together

Explore all the stories →

What next? Pick a door

Chosen from what this app is about. What you open is remembered on this device only.

📚 Books for DiscreteQuest

Read the story, print a workbook, or color the cast — free PDFs to read offline or print at home.

Browse all books →

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