webcam: https://pixabay.com/images/id-146301/
microfoon: https://pixabay.com/vectors/music-sound-audio-speakers-2936214/
monnik: https://pixabay.com/nl/photos/monnik-handen-zen-geloof-persoon-555391/
houd afstand: Vysotsky (Wikimedia), https://creativecommons.org/licenses/by-sa/4.0/deed.nl
kinderen in lokaal: https://unsplash.com/photos/zFSo6bnZJTw
schoolgebouw: https://unsplash.com/photos/zN2dwq2ZCRs
papier etc.: https://pixabay.com/nl/illustrations/papier-rommelig-notities-abstract-3033204/
lampje met hersenen: https://pixabay.com/nl/illustrations/hersenen-brainstormen-gloeilamp-4260689/
kwalitatief: https://unsplash.com/photos/00nHr1Lpq6w
kwantitatief: https://pixabay.com/nl/vectors/statistiek-analytische-diagram-1564428/
onderzoeksposter: https://commons.m.wikimedia.org/wiki/File:My_research_poster.jpg (CC BY 4.0)
bos: https://pixabay.com/nl/vectors/bos-bomen-planten-bossen-groen-148727/
klaslokaal: https://pixabay.com/nl/photos/klas-school-onderwijs-leren-2093744/