Seven challenges. Seven different reasoning problems. One complete classroom collection.
The Complete 20-Minute Thinking Challenge Collection brings together all seven Evidence Capture Challenges from The Irwin System™.
Each challenge is designed as a complete, ready-to-run classroom experience that can be used in approximately 20 minutes with minimal preparation.
Students begin with an initial judgement, encounter new information or competing possibilities, examine evidence, reconsider their confidence, and record how their thinking changes, strengthens, or becomes more complex.
The purpose is not simply to reach the correct answer. The challenges help teachers see the reasoning movement that usually remains hidden between a student’s first response and final judgement.
Across the collection, learners practise:
NOTICE → THINK → WHAT ELSE? → CLUES → HOW SURE? → LEARN → NOTICE AGAIN
Each challenge includes teacher-facing guidance, student-facing reasoning activities, evidence-capture support, discussion prompts, pathway alignment, and practical classroom notes.
#1 The 20-Minute Thinking Challenge
Students examine an initial moral judgement, respond to changing context, consider competing reasons, and develop a more careful conditional rule.#2 Who Deserves It Most?
Students investigate fairness, competing needs, criteria, priorities, and the evidence used to justify a decision.#3 The Mystery File
Students distinguish evidence from inference, consider alternative explanations, identify assumptions, and judge what can and cannot yet be established.#4 The Viral Claim
Students examine claims, sources, supporting evidence, missing information, reliability, and confidence.#5 The Pattern Trap
Students test apparent patterns, search for exceptions, question premature rules, and revise conclusions when the pattern becomes less certain.#6 The One-Sided Story
Students explore perspective, incomplete accounts, missing information, competing interpretations, and careful judgement.#7 The Borderline Case
Students examine categories, criteria, exceptions, definitions, and the difficult cases that test whether a rule is strong enough.
All seven complete 20-Minute Thinking Challenges
Teacher-facing introductions and facilitation guidance
Student-facing reasoning pages
Evidence-capture activities
Quick reasoning-pattern codes
Minimum teacher evidence guidance
Irwin System pathway mapping
Extension and adaptation options
Safety and classroom-use notes
Printable digital PDFs
Individual Educator Licence
Full Resource Licence Terms
Digital ZIP download
Primarily designed for Years 5–10, with many challenges adaptable for younger learners through supported discussion and for senior students through deeper analysis, evidence testing, and extended justification.
Use the challenges as:
complete one-lesson reasoning activities
evidence-capture tasks
critical-thinking lessons
discussion and writing prompts
formative assessment opportunities
introductions to the Irwin System pathway
follow-up activities for observation, inquiry, English, social sciences, health, science, or cross-curricular learning
Teachers may use the collection sequentially or select individual challenges according to the reasoning behaviour they want to make visible.
This edition is licensed to one named educator.
The licensed educator may print, display, and use the resources with learners they personally teach.
The files may not be shared with colleagues, uploaded to shared staff drives, distributed across a school, posted publicly, resold, or incorporated into another commercial resource.
For use by multiple educators within one school or kura, purchase the Single-School Licence edition.
The included licence documents govern use of the collection.
Seven challenges. Seven different reasoning problems. One complete classroom collection.
The Complete 20-Minute Thinking Challenge Collection brings together all seven Evidence Capture Challenges from The Irwin System™.
Each challenge is designed as a complete, ready-to-run classroom experience that can be used in approximately 20 minutes with minimal preparation.
Students begin with an initial judgement, encounter new information or competing possibilities, examine evidence, reconsider their confidence, and record how their thinking changes, strengthens, or becomes more complex.
The purpose is not simply to reach the correct answer. The challenges help teachers see the reasoning movement that usually remains hidden between a student’s first response and final judgement.
Across the collection, learners practise:
NOTICE → THINK → WHAT ELSE? → CLUES → HOW SURE? → LEARN → NOTICE AGAIN
Each challenge includes teacher-facing guidance, student-facing reasoning activities, evidence-capture support, discussion prompts, pathway alignment, and practical classroom notes.
#1 The 20-Minute Thinking Challenge
Students examine an initial moral judgement, respond to changing context, consider competing reasons, and develop a more careful conditional rule.#2 Who Deserves It Most?
Students investigate fairness, competing needs, criteria, priorities, and the evidence used to justify a decision.#3 The Mystery File
Students distinguish evidence from inference, consider alternative explanations, identify assumptions, and judge what can and cannot yet be established.#4 The Viral Claim
Students examine claims, sources, supporting evidence, missing information, reliability, and confidence.#5 The Pattern Trap
Students test apparent patterns, search for exceptions, question premature rules, and revise conclusions when the pattern becomes less certain.#6 The One-Sided Story
Students explore perspective, incomplete accounts, missing information, competing interpretations, and careful judgement.#7 The Borderline Case
Students examine categories, criteria, exceptions, definitions, and the difficult cases that test whether a rule is strong enough.
All seven complete 20-Minute Thinking Challenges
Teacher-facing introductions and facilitation guidance
Student-facing reasoning pages
Evidence-capture activities
Quick reasoning-pattern codes
Minimum teacher evidence guidance
Irwin System pathway mapping
Extension and adaptation options
Safety and classroom-use notes
Printable digital PDFs
Individual Educator Licence
Full Resource Licence Terms
Digital ZIP download
Primarily designed for Years 5–10, with many challenges adaptable for younger learners through supported discussion and for senior students through deeper analysis, evidence testing, and extended justification.
Use the challenges as:
complete one-lesson reasoning activities
evidence-capture tasks
critical-thinking lessons
discussion and writing prompts
formative assessment opportunities
introductions to the Irwin System pathway
follow-up activities for observation, inquiry, English, social sciences, health, science, or cross-curricular learning
Teachers may use the collection sequentially or select individual challenges according to the reasoning behaviour they want to make visible.
This edition is licensed to one named educator.
The licensed educator may print, display, and use the resources with learners they personally teach.
The files may not be shared with colleagues, uploaded to shared staff drives, distributed across a school, posted publicly, resold, or incorporated into another commercial resource.
For use by multiple educators within one school or kura, purchase the Single-School Licence edition.
The included licence documents govern use of the collection.
