---
title: "The sources behind these pages"
description: "Where the published work behind the Inside Professor Oops pages is listed: on four research chapters, each source with what we did with it."
source_name: "Game Tailors"
source_url: "https://professoroops.com/en/inside/sources/"
site_home: "https://professoroops.com/"
source_description: "The drawing app where the paper is real. No ads. No accounts. No personal data: only anonymous counts, which you can switch off."
locale: "en"
legal:
  - "Game Tailors · Schieweg 15Y-40, 2627 AN Delft (NL)"
  - "KvK 92437702 · VAT NL866044474B01"
  - "info@gametailors.com · +31 6 4227 5919"
copyright: "© 2026 Game Tailors"
published_at: "2026-11-10T12:02:32.313Z"
modified_at: "2026-11-10T12:02:32.313Z"
---

# The sources behind these pages

## Every source is listed on the research chapter it belongs to

The published work these pages cite is listed at the foot of four research chapters, each source with what we did with it. A citation on any page takes you straight to its entry there. [The research behind it](<https://professoroops.com/en/inside/research/>) counts them all and says what each kind of label means.

### [How children learn through play](<https://professoroops.com/en/inside/research-play/>)

Surprise, self-led play, rewards and guided play.

### [The science of simulating](<https://professoroops.com/en/inside/research-simulation/>)

Fluids, watercolour, drop stains, fire and mould.

### [Real facts, real animals](<https://professoroops.com/en/inside/research-real/>)

Ant trails, fleeing flies, ignition points and cabbage colours.

### [Designed with respect for children](<https://professoroops.com/en/inside/research-respect/>)

No locks or prices in play, a sum for grown-ups, three asks at most.