Mass experiments

Our annual Citizen Science-project

The Star-Spotting experiment. Photo: Mattias Pettersson, Umeå Universitet

Every autumn since 2009, thousands of Swedish pupils of all ages and members of the public have been helping researchers gather huge amounts of data. These so-called mass experiments are of mutual benefit: the researchers get more data than they could otherwise easily collect, the pupils get the opportunity to participate in real research, and the teachers get material and methods based upon state-of-the-art research to integrate in the curriculum.

Kid taking part in The Lady Bird Experiment Photo: Erik Cronberg – VA (Public & Science)

Public & Science Sweden coordinates these Citizen Science-projects as part of the European science festival, European Researchers’ Night.  Schools from across the whole of Sweden are involved.

The mass experiments efficiently link education to research, establishing valuable contacts with researchers and giving students insights into research methods and scientific thinking.

VA helps the researcher to design an experiment whereby students gather data guided by their teacher. Research projects are also selected according to how well they fit into the curriculum. The researcher and VA jointly develop instructions and teachers’ manuals, and researchers also communicate directly with individual teachers and students using webinars and sometimes social media.

We have been running mass experiments since 2009. Here you can find an information folder about the Swedish mass experiments.

Examples of our most recent experiments:

Our annual mass experiments are examples of citizen science. Our experiences from conducting them are shared in an essay published in the Journal of Science Communication that discusses how mass experiments/citizen science can stimulate scientific literacy and an interest in science while generating scientific output.

Other citizen science-related projects

Public & Science Sweden has helped to create a national portal for citizen science in Sweden. More information about the project, ARCS, can be found here.

Public & Science was a partner in an EU-funded project EU-Citizen.Science that developed a European platform for citizen science.

Public & Science Sweden is also a member of ECSA (European Citizen Science Association).

Latest about the mass experiment:

Findings from Sweden’s largest plastic waste experiment now available

The Plastic Experiment is a nationwide Citizen Science project in which Keep Sweden Tidy Foundation, Public & Science Sweden and the University of Gothenburg have been working together to investigate… Läs mer


2024-04-09 |


2024-06-11 |


European Researchers' Night, Mass experiment, News articles, Press Releases, Public Engagement

The Plastic Experiment 2022/23 – Final Report

This report is an English summary of the VA-Report (in Swedish) called Plastexperimentet – slutrapport 2022-2023. The Plastic Experiment was a Citizen Science project and a collaboration between the Keep… Läs mer


2024-04-08 |


2024-05-03 |


Citizen Science, European Researchers' Night, Mass experiment, VA Reports & Papers

Most plastic litter found on beaches reveals Swedish citizen science project

The first report of the Plastic Experiment, a citizen science project involving young people and members of the public from across Sweden, has now been published. The most plastic litter… Läs mer


2023-05-15 |


2023-09-25 |


Citizen Science, European Researchers' Night, Mass experiment, News articles
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Public & Science Sweden

Areas of interest


Vetenskap & Allmänhet

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