Introducing Blockchains at School Without Computers: Hands-On Sense-Making for Young Learners

Paper Title

Introducing Blockchains at School Without Computers: Hands-On Sense-Making for Young Learners

Publication Info

• Topic area: Blockchain education for young learners using unplugged, game-based methods.
• Keywords: Blockchain, game-based learning, unplugged activities, K–12 education, digital citizenship, collaborative learning, tangible interaction, decentralized systems, cybersecurity, computational thinking.

Background and Problem

• Problem / challenge: Despite the growing societal presence of blockchain technologies, there is a lack of developmentally appropriate and empirically validated approaches for teaching blockchain concepts to K–12 learners. Existing tools often target professionals or higher education, leaving a gap in accessible, scalable, and classroom-ready interventions for younger students.
• Significance: Early blockchain literacy is essential for preparing young learners to critically engage with decentralized systems that influence identity, ownership, and participation in digital ecosystems. This is increasingly important as blockchain applications become ubiquitous in education, governance, and everyday life.
• Motivation and related work: Prior work on blockchain education has focused on digital-only or hybrid approaches, often targeting adults or university students. Unplugged and game-based methods have shown promise in other domains but remain underexplored for blockchain education in K–12 settings. This paper addresses the gap by designing and evaluating a tangible, unplugged toolkit for young learners.

Solution

• Proposed approach: Blockchain@School, an unplugged, board-game-based toolkit that introduces blockchain concepts through collaborative play and tangible interaction, supported by a lightweight web application for validation.
• Novelty:
  1. Development of a tangible, unplugged toolkit to teach blockchain concepts to learners aged 9–13.
  2. Empirical evaluation of the toolkit with over 300 learners, demonstrating significant learning gains and high engagement.
  3. Iterative design process informed by feedback from 75 educators to ensure classroom readiness and scalability.
  4. Integration of role-play and collaborative dynamics to reflect the distributed and cooperative nature of blockchain.
• Procedure and key techniques:
  • Learners simulate blockchain processes using physical blocks, word cards, and hash-value cards.
  • Groups act as blockchain nodes, collaboratively encoding data, validating blocks, and achieving consensus.
  • A web application complements the physical toolkit by enabling real-time validation and visualization of blockchain mechanics.
  • Iterative design and testing with educators and learners to refine usability, engagement, and learning outcomes.

Results

• Concrete findings:
  • Self-reported knowledge of blockchain concepts increased from 1.78 to 3.43 (on a 5-point scale).
  • Objective learning scores improved from a mean of 3.08 to 4.92 (out of 9), with statistically significant gains (p < 0.001).
  • Engagement indicators showed high interest in rejoining the activity (mean = 4.25) and recommending it to peers (mean = 4.06).
• Advantage over baselines:
  • The experimental group using Blockchain@School showed greater learning gains and engagement compared to a control group receiving traditional lecture-style instruction.
  • Significant improvements in understanding decentralized systems and security were observed in the experimental group.
• Experiments / evaluation:
  • Conducted 90-minute workshops with 356 learners aged 9–13 across 15 classes in 8 schools.
  • Data collected through pre/post-questionnaires, observer diaries, and teacher feedback.
  • Control group of 57 learners received a lecture-style session for comparative evaluation.
• Limitations and future work:
  • Short-term evaluation without testing long-term retention or transfer of knowledge.
  • Simplification of blockchain mechanics (e.g., hashing) may limit progression to advanced technical literacy.
  • Sample bias due to participation from motivated schools and teachers.
  • Future work includes longitudinal studies, testing in diverse contexts, and integrating advanced blockchain concepts.

Summary

Blockchain@School introduces blockchain concepts to learners aged 9–13 through an unplugged, game-based approach that combines tangible interaction and collaborative play. The toolkit demonstrated significant learning gains, high engagement, and positive teacher feedback in a study involving over 300 participants. By making abstract blockchain principles tangible and accessible, the intervention lowers entry barriers to complex socio-technical systems and fosters digital citizenship. Future work will focus on refining the toolkit, testing long-term impacts, and expanding its applicability across diverse educational contexts and disciplines.