Examples of initiatives in crowd sourcing for education where learners also serve as contributors.
- ClassOverflow
- Quasi-Crowdsourcing Test (QCT)
- OLC
- DLMA

San Jose State University

Contributors are those that serve the learner crowd. They are typically part of the learner crowd or an external crowd. 

Contributors in Crowdsourcing for Education

Learners participate in crowdsourcing for education primarily as recipients of knowledge, but they can also serve as contributors. When acting as contributors, they provide assistance and unique perspectives to their peers. This peer-based involvement is advantageous because the anonymity of the process can reduce stress, and the learners' recent, firsthand experience with the subject matter helps them identify common errors and learning challenges.

Learners in Crowdsourcing for Education

Jiang, Y., Schlagwein, D., & Benatallah, B. (2018). A Review on Crowdsourcing for Education: State of the Art of Literature and Practice. PACIS, 180

A Review on Crowdsourcing for Education: State of the Art of Literature and Practice

Examples of Contributors as Learners in Crowdsourcing for Education

Examples of initiatives in crowdsourcing for education where contributors are external actors.
- Writing Word Problems and Hints
- Oppia
- CrowdCrit

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