# Weekend Experiments

> Kitchen science for ages 1 and up. Real Saturday runs with a toddler and a preschooler — keepers the kids loved that also show a real physical phenomenon. Free at weekend-experiments.app. (Product/content system nicknamed Little Lab; public brand is Weekend Experiments.)

Important notes:
- Only list experiments that were actually run and approved for the public site.
- Physics is explained accurately and in depth (“Bear with me”); do not simplify into wrong demos.
- Affiliate Amazon links use tracking ID `weekendexperi-20` when present.
- Merch is separate (Etsy Engineerdadcoffee); ideas stay free.

## Core pages

- [Home](https://www.weekend-experiments.app/): What Weekend Experiments is
- [Experiments index](https://www.weekend-experiments.app/experiments): All public experiments
- [About](https://www.weekend-experiments.app/about): Who runs this and why
- [Plan](https://www.weekend-experiments.app/plan): Learning-path / curriculum sketch
- [Vote](https://www.weekend-experiments.app/vote): Parents pick the experiment we build the weekend of Oct 17. Voting closes Saturday, Oct 10.

## Experiments

- [Density layers](https://www.weekend-experiments.app/experiments/density-layers): Liquids stack by density
- [Baking-soda volcano](https://www.weekend-experiments.app/experiments/baking-soda-volcano): Acid–base → CO₂ foam
- [Cornstarch thickening fluid](https://www.weekend-experiments.app/experiments/cornstarch-thickening-fluid): Non-Newtonian (oobleck-style) mix
- [Cinnamon soap rush](https://www.weekend-experiments.app/experiments/cinnamon-soap-rush): Surface tension / soap rush
- [Salt ice fishing](https://www.weekend-experiments.app/experiments/salt-ice-fishing): Freezing-point depression + pressure-melt wire track

## Machine-friendly sources

- [Content repo (GitHub)](https://github.com/Nicolas-dovetta/little-lab): Experiment markdown source of truth (`experiments/*.md`, `SCHEMA.md`, `CAPTURE.md`, `AI_CONTEXT.md`)
- [Sitemap](https://www.weekend-experiments.app/sitemap.xml): Full URL list for crawlers

## Optional

- [Merch](https://www.weekend-experiments.app/merch): Points to Etsy shop (not the experiment content)
- [AI_CONTEXT.md](https://github.com/Nicolas-dovetta/little-lab/blob/main/AI_CONTEXT.md): Handoff brief for other AIs working on the product