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