Challenge Based Learning (CBL)¶

Strategy · All strategies
Evidence · 7 claims (5 for, 1 mixed, 1 against) · 19 studies (9 review, 5 theoretical, 3 causal, 2 quant-synthesis), q1–q4 · 3 of 19 report an effect size · 1 claim rests on one study

Description¶

Challenge Based Learning (CBL) is a collaborative, inquiry-driven framework in which learners identify a real-world challenge, investigate it through guided research, and act by developing and implementing evidence-based solutions. The framework moves through three interrelated phases — Engage (moving from a big idea to a concrete, learner-owned challenge), Investigate (guided and student-directed inquiry), and Act (designing, implementing, and evaluating solutions) — with documentation and reflection throughout. CBL was developed and piloted by Apple with educators and is documented in the Challenge Based Learning White Paper (Nichols & Cator, 2009; Apple Inc., 2011).

Design Implications¶

CBL situates learning in authentic problems, which raises perceived relevance and task value — a key driver of engagement and persistence [~M]. Because learners work on whole, complex problems rather than isolated subskills, CBL supports transfer of knowledge to novel situations [~M]. Its effectiveness, however, depends on scaffolding: unguided inquiry alone tends to underperform explicit guidance for novices, so CBL implementations must pair learner autonomy with coaching, structure, and just-in-time instruction [~S]. The productive-struggle character of the Engage and Investigate phases can also deepen conceptual learning when followed by structured consolidation Productive failure improves conceptual learning relative to direct instruction followed by practice. [+M].

Context¶

Requirements¶

• An authentic challenge connected to learners' world, framed during Challenge Identification
• Collaborative team structures and norms with defined roles and individual accountability
• Access to information sources, experts, and tools for investigation
• Time — CBL typically spans weeks, not single sessions
• Ongoing instructor Coaching and formative checkpoints rather than front-loaded lecturing
• A genuine, open-ended challenge connected to a "big idea" that learners can act on locally
• Collaborative team structures with defined roles and shared artifacts (Collaboration)
• Access to real-world resources, data, experts, or community partners
• Sustained time blocks; CBL typically spans weeks, not single sessions

Constraints¶

• Novices without adequate scaffolding experience high extraneous load and flounder in open-ended problem spaces; guided inquiry outperforms pure discovery, especially for learners with low prior knowledge [~S]
• The time cost is substantial; coverage-driven curricula and high-stakes standardized assessment schedules frequently crowd out the Act phase, reducing CBL to a simulation of action [-W]
• Group work without structured roles and accountability can produce social loafing and uneven learning across team members [-M]
• Assessment systems built for individual content mastery are a poor fit; misaligned grading undermines the collaborative, iterative character of the work [-W]
• When the challenge is too far from learners' prior knowledge, initial engagement collapses; the big idea must connect to something learners can activate [~M]
• Weakly scaffolded versions collapse into unguided discovery, which is ineffective for novices Minimal-guidance instruction underperforms scaffolded instruction for novice learners. [-S]
• Deep content coverage can suffer; CBL must be deliberately aligned to curriculum standards or key concepts get skipped [~M]
• Group work without structure and individual accountability allows free-riding and uneven learning [~M]
• Assessment is difficult to standardize; success depends on authentic rubrics and process evidence, not exams alone

Implementation Variability¶

• Scale: from a single unit within a course to a whole-school program
• Locus of the challenge: teacher-provided big ideas with learner-derived challenges, or fully learner-identified challenges
• Act phase depth: awareness campaigns, prototypes, policy proposals, or implemented community interventions
• Subject integration: single-subject CBL or interdisciplinary implementations
• Scale: full-semester challenges vs. short 2–3 week mini-challenges
• Locus of the challenge: teacher-nominated big idea with learner-defined challenge questions (typical entry point) vs. fully learner-generated challenges
• Domain: science (environmental audits), civics (community campaigns), media/technology (app or prototype design)
• Hybrid forms: CBL phases interleaved with direct instruction on needed concepts, blending Explicit Teaching with inquiry

Target Learners¶

• Middle school through adult learners; the framework was originally piloted in secondary and higher education
• Learners with enough prior knowledge to conduct guided inquiry productively; for complete novices, front-load direct instruction before opening the investigation [~M]
• Learners who benefit from autonomy and authentic purpose; autonomy-supportive designs strengthen intrinsic motivation Autonomy support fosters intrinsic motivation. [+S]
• Learners whose confidence needs building — successful challenge completion and public action can strengthen persistence beliefs Self-efficacy predicts academic persistence. [+M]
• Learners with moderate prior knowledge who can conduct guided investigation without drowning in search Whole-task practice improves transfer of complex skills. [~M]
• Adolescents and adults; younger learners need heavily simplified challenge structures and more facilitator scaffolding
• Learners disengaged by abstract instruction — authentic purpose and audience increase persistence Learners invest more effort when they perceive a task as relevant and valuable. [+M]
• Less suitable as a first exposure for complete novices, who need foundational Procedural Information before open investigation

Target Learning Goals¶

• Deep subject-matter knowledge applied to authentic contexts
• 21st-century competencies: collaboration, communication, critical thinking, and self-direction
• Problem identification and solution design — defining a problem well, not just solving a given one
• Civic and community engagement through implemented action
• Collaboration and communication: negotiating roles, producing shared artifacts
• Research and information literacy: gathering, evaluating, and synthesizing evidence

Instructions¶

1. Engage — Present a big idea (e.g., water, health, sustainability); through essential questioning, learners narrow it to a specific, actionable challenge (Challenge Identification)
2. Commit — Teams adopt the challenge and develop a guiding question
3. Investigate — Conduct guided then self-directed research: background reading, data collection, interviews, and fieldwork; instructors provide Coaching and just-in-time content instruction
4. Analyze — Teams synthesize findings and identify evidence-based solution directions
5. Act — Design, implement, and document a solution; connect to Authentic Audiences & Purposes where possible
6. Reflect and Assess — Document the process, evaluate impact, and debrief learning against both content and competency goals

Related Strategies¶

• Project-Based Learning — CBL is a variant of PBL distinguished by learner-identified challenges and a mandatory action phase
• Case-Based Learning — shares authentic-problem grounding but analyzes existing cases rather than acting on live challenges; case-based approaches have their own evidence base for exam performance Case-based learning improves exam performance. [+M]
• Service-Learning — overlaps in the Act phase when solutions serve a community partner
• Project-Based Learning — CBL is a structured variant with an explicit Engage–Investigate–Act arc and a required real-world action
• Problem-Based Learning — similar inquiry structure but typically anchored in a case rather than a learner-defined challenge
• Case-Based Learning — provides the investigation material CBL teams often need
• Service Learning — overlaps in the Act phase when solutions serve a community partner

Related Elements¶

• Challenge Identification — the Engage-phase move that converts a big idea into a learner-owned challenge
• Coaching — the instructor role during inquiry, replacing front-loaded instruction

Patterns That Use This Strategy¶

• Anchored Instruction — like CBL, anchors learning in a realistic problem context that sustains inquiry
• Collaborative Inquiry — the investigation phase enacts this pattern's cycle of questioning, evidence gathering, and synthesis
• Cognitive Apprenticeship — the Act phase provides authentic practice with coaching and articulation in a real setting

Tools¶

• Apple's Challenge Based Learning resources and the CBL Classroom app (Apple Education)
• Collaborative documentation platforms (shared docs, wikis) for the Investigate phase
• Digital storytelling and prototyping tools for the Act phase

Examples¶

• Apple's original pilot (2011) — Six schools across three countries implemented CBL challenges such as reducing energy consumption and improving community health; students designed and ran awareness campaigns and measurable interventions (Apple Inc., 2011)
• University engineering courses — Teams take on municipal sustainability challenges (e.g., stormwater management) with city partners, moving from stakeholder interviews to implemented pilot designs
• K-12 environmental science — A "food waste" big idea narrows to a school-cafeteria challenge; students audit waste, propose menu and logistics changes, and present results to the district board
• Challenge Based Learning (Digital Promise / Challenge Institute) — the official framework site with implementation guides and example challenges from K-12 and higher education
• Apple's original CBL pilots (2008–2009) — documented classrooms in six countries where students tackled challenges such as energy conservation and community health, producing measurable behavior-change campaigns
• University engineering capstones — teams identify a local infrastructure or sustainability challenge, investigate with municipal data, and prototype solutions presented to city stakeholders

Key Sources¶

• Nichols, M. H., & Cator, K. (2009). Challenge Based Learning white paper. Apple Inc.
• Johnson, L. F., Smith, R. S., Smythe, J. T., & Varon, R. K. (2009). Challenge-Based Learning: An approach for teaching and learning in the 21st century. New Media Consortium.
• Hmelo-Silver, C. E., Duncan, R. G., & Chinn, C. A. (2007). Scaffolding and achievement in problem-based and inquiry learning: A response to Kirschner, Sweller, and Clark (2006). Educational Psychologist, 42(2), 99–107. doi:10.1080/00461520701263368
• Kirschner, P. A., Sweller, J., & Clark, R. E. (2006). Why minimal guidance during instruction does not work: An analysis of the failure of constructivist, discovery, problem-based, experiential, and inquiry-based teaching. Educational Psychologist, 41(2), 75–86. doi:10.1207/s15326985ep4102_1
• Kapur, M. (2016). Examining productive failure, productive success, unproductive failure, and unproductive success in learning. Educational Psychologist, 51(2), 289–299. doi:10.1080/00461520.2016.1155457 }
• Johnson, L. F., Smith, R. S., Smythe, J. T., & Varon, R. K. (2009). Challenge-based learning: An approach for our time. The New Media Consortium. https://www.learntechlib.org/p/182083/
• Nichols, M. H., & Cator, K. (2009). Challenge based learning white paper. Apple, Inc.
• Kokotsaki, D., Menzies, V., & Wiggins, A. (2016). Project-based learning: A review of the literature. Improving Schools, 19(3), 267–277. doi:10.1177/1365480216659733
• Krajcik, J. S., & Blumenfeld, P. C. (2006). Project-based learning. In R. K. Sawyer (Ed.), The Cambridge Handbook of the Learning Sciences (pp. 317–334). Cambridge University Press.