Interactive · Free

Learn by doing, not just reading.

Four hands-on exercises that train your judgment, each with instant, specific feedback, like having a mentor beside you.

Everything here is free. Your progress is saved on this device. Sign up free to keep your progress & scores in your account, on any device.

5 scenarios6 min

Chart-selection simulator

A stakeholder asks a real question. Pick the chart that answers it — and learn why. Live sandbox5 min

Chart playground

Change the chart type, colour, sorting and decluttering, and watch a messy chart become a clean one. Find 4 flaws6 min

Dashboard critique

A realistic executive dashboard with problems. Find the four flaws a pro would flag. Build a story5 min

Data story builder

Arrange scattered findings into context → insight → stakes → action.