# Mystery Box Investigation Scenario | Evidence & Reasoning Activity | No-prep | HPGE | Years 3-6 **Price:** $4.50 AUD **Seller:** TeachBuySell Seller **Year Levels:** year3, year4, year5, year6 **Subjects:** humanitiesAndSocialSciences, english, science ## Description (seller-submitted) The Mystery Box | Critical Thinking Mystery Scenario | Inference & Reasoning A mysterious locked box appears outside the classroom. No one knows who left it there. There are no instructions. Strange symbols are drawn on the side, a piece of blue thread is caught in the lock, and the clues do not point to one obvious answer. What is inside the box? Why was it left there? And should it be opened? The Mystery Box is an engaging, open-ended critical thinking scenario that challenges students to investigate clues, develop competing theories, distinguish evidence from assumptions, and revise their thinking when new information appears. Designed for Grades 3–8 , this low-prep thinking challenge encourages students to look beyond their first idea and build explanations that are supported by evidence. There is no single correct solution. Students must investigate, reason, question, justify, and rethink . What’s Included ✔ Engaging mystery scenario introduction ✔ Student investigation challenge ✔ Mystery clues for analysis and interpretation ✔ Evidence and assumption thinking prompts ✔ Investigate & Reason prompts ✔ Explain Your Thinking questions ✔ New-evidence twist that challenges students to reconsider their theory ✔ Open-ended extension challenge ✔ Student reflection prompts ✔ Teacher notes and implementation ideas ✔ Flexible lesson options ✔ Differentiation suggestions ✔ Extension and enrichment ideas ✔ Curriculum connections ✔ Learning focus and thinking skill development pages Students Will Practise Critical thinking and reasoning Inferential thinking Evidence-based reasoning Flexible thinking Questioning and investigation Comparing competing explanations Distinguishing evidence from assumptions Revising ideas when new information appears Communicating and justifying conclusions Why Teachers Will Love This Resource The Mystery Box is designed to create genuine thinking and discussion without complicated preparation or a predetermined answer . Students can approach the… [truncated] --- View on TeachBuySell: https://teachbuysell.com.au/l/6a51b1f5-ae51-45d9-a2a4-f12bee96c080 Marketplace: https://teachbuysell.com.au