# Pick a small investigation

One useful part at a time. Choose a way to take part, keep your clues and pause when useful.

- [Day 11 · Ask what changed](day-11.html)
- [Day 12 · Which date means what?](day-12.html)
- [Day 13 · Put changes in order](day-13.html)
- [Day 14 · Compare the same thing](day-14.html)
- [Day 15 · Why did it change?](day-15.html)
- [Day 16 · People helped make the change](day-16.html)
- [Day 17 · Two people can notice different effects](day-17.html)
- [Day 18 · A small source has limits](day-18.html)
- [Day 19 · Suggest a useful next response](day-19.html)
- [Day 20 · Make a tiny change exhibit](day-20.html)

[Sources and reuse](../SOURCE-NOTICE.html). Original educational work © NeuroForgeIO Pty Ltd 2026, CC BY 4.0.