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Probability & Statistics
15 apps to play — grouped by age.
🐣 Ages 3–5 · Pre-K & K
🎈 Ages 6–8 · Grades 1–3
PollPals
Ages 6–8 · Gr 1–3 Level 1
Ask the class a question, tap in the answers, and a bar graph draws itself. The tallest bar is the favourite — but before you asked, you didn’t know. That’s the big idea: data is MADE, not given. Read the graph (which won? how many more?), then make your own in the Bar-graph lab. A tiny, deterministic data game, no internet. Ages 6–8.
Play PollPals →
BasketPals
Ages 6–8 · Gr 1–3 Level 2
A push-your-luck dice game for ages 6–8: Pika the beaver stacks hay for winter! Roll the two dice and gather hay into your basket — but a 7 tips it over. Bank when you feel lucky enough; the biggest haypile wins. Spilled hay never wastes — it lands in the meadow for the next friend to scoop. Discover, by playing, that 7 comes up most.
Play BasketPals →
ScorePals
Ages 6–7 · Gr 1–2 Level 2
Be the family’s official scorekeeper! Add up each round, carry when a column fills, see who’s ahead — and the app draws the game as a bar graph. Big buttons, read-aloud, gentle checking, for grades 1–2. On-device; nothing leaves your device.
Play ScorePals →
SevenPals
Ages 6–8 · Gr 1–3 Level 2
A first probability game for ages 6–8: place your ladybirds on the flower patches (2–12) you think will bloom most, roll two dice, count the dots — and find out why 7 comes up most of all. Play 5 rounds with Lucky the ladybird, or pass the tablet. On-device, no accounts, no clock — a wrong guess is part of the fun.
Play SevenPals →
🎒 Ages 9–14 · Grades 4–8
MeasureQuest
Ages 8–13 · Gr 3–8 Level 3
Read a ruler (even a broken one), balance a scale, convert units up and down the metric staircase, build shapes on a grid, graph your own data, and sharpen your estimates.
Play MeasureQuest →
DataForge
Ages 9–12 · Gr 4–7 Level 3
Build data pipelines, chart the story, and test hypotheses on real datasets — plus 16 kits.
Play DataForge →
ChanceForge
Ages 10–12 · Gr 5–7 Level 2
Run coin, dice, and law-of-large-numbers experiments, then practice probability & statistics across 16 kits.
Play ChanceForge →
BridgeForge
Ages 10–12 · Gr 5–7 Level 3
Build bridges between math and everything else. Match a math idea — ratio, symmetry, rate, probability — to the real-world moment in art, music, science, sport or code that actually uses it. Plus cross-curricular Concepts checks. Ages 9–14.
Play BridgeForge →
🎓 Ages 15–18 · Grades 9–12
OddsForge
Ages 15–18 · Gr 9–12 Level 4
Weigh the evidence: how surprising is a streak if the honest odds held? Read one-sided p-values off the binomial tail — and see how peeking until it “looks significant” manufactures a false alarm. Ages 15–18.
Play OddsForge →
RiskDojo
Ages 15–18 · Gr 9–12 Level 4
A rare disaster you can’t afford, swapped for a small cost you can — that trade is all insurance is, and it’s just maths. RiskDojo builds the whole idea from expected value up: the fair premium, the deductible, and the law of large numbers that lets a pool cover a rare big loss and still break even. Predict each number, then reveal the worked step — and run a pool yourself to watch adverse selection break it. Ages 15–18.
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BottleneckForge
Ages 15–18 · Gr 9–12 Level 5
Find the step that really limits the outcome — predict, then let the math show you. Amdahl’s law, survival funnels, and how many shots it takes. For teens.
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InferForge
Ages 15–18 · Gr 9–12 Level 5
See the ideas AP Statistics students find hardest — the sampling distribution of the mean (the Central Limit Theorem) and what “95% confident” really means — by running the simulations yourself. Predict, then run 300 samples and watch. On-device, nothing leaves your device.
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PriorForge
Ages 15–18 · Gr 9–12 Level 5
Every game starts at 5.5. Adjust the dummy votes, add real ratings, and watch a Bayesian average pull a small crowd toward the prior — the statistics behind every leaderboard. For teens.
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RatingForge
Ages 15–18 · Gr 9–12 Level 5
Build a rating system and watch it converge (and wobble). For teens: give six bots hidden true strengths, play a season, and watch Elo sort them — then change the K-factor and see the trade-off between fast and steady. Computed on-device; nothing leaves your device.
Play RatingForge →