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
Sandbox

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 Bootstrap +8 more
Enter Stats Lab — 12 Activities →
Chaos Lab
Watch order tip into chaos. Drag the logistic map past r=3.57, trace butterfly-effect divergence, and grow Conway's Game of Life from a single glider.
Logistic Map Butterfly Effect Lorenz Attractor Game of Life +2 more
Enter Chaos Lab — 6 Activities →
Deep Learning Lab
Paint on CNN grids, click through transformer attention, walk a VAE latent space, watch a GAN match distributions, and diffuse structure into noise — every major DL architecture family.
CNN Transformer VAE Diffusion Kalman +6 more
Enter DL Lab — 12 Activities →