Prototyping Solutions

Overview

This is Lesson 2 of 2 in “Design and Innovate Solutions”. Students build and test prototypes that meet user needs, then refine their designs by making deliberate content and material choices that consider the impact on people and the environment.

Learning intentions

• WALT plan and construct a prototype based on our design requirements and user needs.
• WALT test our prototype fairly and record what works and what doesn’t.
• WALT make improvements by justifying our design choices using evidence from testing.
• WALT present our prototype clearly, explaining how it supports users and reduces harm to the environment.

Success criteria

• I can build a prototype that matches the key requirements from my plan.
• I can run a simple test and explain results using specific observations.
• I can refine my design and justify changes using evidence.
• I can explain how my choices affect people and the environment.

Curriculum links

• Technology — Designing and developing digital/technological outcomes: Students prototype and iterate to improve outcomes.
• Technology — Nature of technology: Students consider the purpose of design constraints and the impact on people and the environment.
• Technology — Communicating technical ideas: Students present and explain their solution and improvements.

Lesson structure (60 minutes)

1. 0–5 min · Settle and recall. Teacher revisits last lesson’s design brief and requirements (who the user is, what success looks like, and constraints). Students reread their own requirements and highlight 2–3 “must-haves”.

2. 5–10 min · Prototype plan check (quick). Teacher models a “requirements-to-prototype” checklist: materials needed, features included, and where changes might be needed. Students confirm what they will build today and tick off the must-haves.

3. 10–25 min · Build prototype (materials out). Teacher circulates, encouraging safe tool use, careful assembly, and respectful collaboration. Students create a prototype using chosen materials, labelling parts where helpful (e.g., “button”, “sensor”, “holder”).

4. 25–30 min · Mid-build reflection: what might fail? Teacher prompts: “Which part will be tested first?” and “What problem do you predict?” Students write a brief prediction and identify one improvement they could make after testing.

5. 30–45 min · Prototype testing (fair trials). Teacher sets up testing stations with clear instructions and timing so trials are consistent. Students test their own prototype (or trade with another group), recording observations: what worked, what didn’t, where it broke or underperformed, and why they think that happened.

6. 45–52 min · Improve with justification. Teacher models making one specific change and linking it to evidence (e.g., “It slipped because…” → “I will add…”). Students revise their prototype and write:

• Change made
• Evidence from test
• How it improves user needs
• Any environmental impact (e.g., reused materials, reduced waste, safer disposal)

7. 52–60 min · Present and share impact. Teacher runs quick “Gallery Share” presentations (1 minute per group, then 30 seconds questions). Students present: prototype overview, user need met, test result, improvement made, and the impact of choices on people and the environment.

Resources

• Prototype materials of students’ choice (recycled items, craft materials, cardboard, tape, string, fasteners, glue sticks, paper, foam, fabric offcuts)
• Basic tools for safe use (scissors, hole punch, craft knives only if teacher-managed, staplers, rulers)
• Safety equipment (gloves if needed, safety glasses if cutting, wipes, bins for waste/recycling)
• Test station cards with instructions and timing
• Student planning/prototype sheets (requirements checklist, test recording table, improvement justification prompts)
• Sticky notes or labels for parts and observations
• Timer and simple display board for gallery presentations

Assessment

• During build (formative): teacher checks that prototypes connect to the must-have requirements and that safety procedures are followed.
• During testing (formative): teacher listens for clear, specific recording of results (not just “it worked”).
• During improvement and presentation (summative/formative hybrid): teacher assesses whether students can justify changes using evidence and explain impact on people and the environment.
• Quick teacher observation notes + a short end-of-lesson “two stars and a wish” from peers during the Gallery Share.

Differentiation

• Support: provide sentence starters for test recording and justification (e.g., “During testing, I noticed…”, “This happened because…”, “I changed…, so…”). Offer a partially completed requirements checklist for students who need structure.
• Support: allow students to choose from pre-approved material lists if safety or time is a concern.
• Extension: challenge students to test one variable they can control (e.g., tighter fastener placement, different material thickness) and compare results; include a clear environmental benefit statement (reused/recyclable parts, reduced waste).
• EAL: allow rehearsed oral planning and provide bilingual/visual supports for key terms (user, need, prototype, test, improve, evidence, environment).
• SEN: reduce writing load by using a simple table with checkboxes (worked / did not work) plus one evidence sentence.

Assessment notes for the teacher (quick)

• Look for alignment between: must-haves → prototype features → test evidence → justified changes → clear explanation of impact.