The Sandbox

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The Sandbox

Stop reading, start doing. Place data points, fit models, toggle indicators, spot patterns — learn by interacting with the algorithms and charts hands-on.

🖱️ Click & drag to experiment
💡 Contextual learning tips
🎯 Guided challenges
Zero dependencies
Choose Your Lab
🧠
ML Lab
Train models, cluster data, and watch algorithms learn — step through gradient descent, watch K-Means converge, and see how parameters change everything.
Linear Regression K-Means Neural Net PCA +5 more
Enter ML Lab — 9 Activities →
📈
Markets Lab
Apply technical indicators to charts, adjust parameters in real-time, and test your pattern recognition — spot hammers, engulfing candles, and more.
Indicators Candlesticks Paper Trading MA Crossover +3 more
Enter Markets Lab — 7 Activities →
📊
Stats Lab
Explore probability distributions, run hypothesis tests, discover correlation, and watch the Central Limit Theorem come alive.
Distributions Hypothesis Testing Bayesian Regression +3 more
Enter Stats Lab — 7 Activities →