selecting and working with materials
4 detailed 50-minute lessons with teaching scripts, worked examples, parent guides, and assessment criteria.
Lesson Overview
Total Lessons: 4
Tier: Foundation and Higher
Duration: 50 minutes per lesson (200 minutes total)
Exam Boards: AQA, Edexcel, OCR, Eduqas, CCEA
Tier: Foundation and Higher
Duration: 50 minutes per lesson (200 minutes total)
Exam Boards: AQA, Edexcel, OCR, Eduqas, CCEA
Learning Objectives
- Explain the key ideas of selecting and working with materials
- Apply selecting and working with materials to exam-style questions
- Develop independent study skills
- Build cross-topic connections
Prerequisites
- Read the revision notes for selecting and working with materials first (GCSE Revise summary)
- Key vocab to pre-teach: D&T Exam Tips
- Basic skills: reading the summary notes and answering the practice questions there
Materials & Equipment
- Exercise book, coloured pens
- Ruler
- Printed revision notes (link below)
- Internet for videos (see Resources)
Lesson 1: Introduction: selecting and working with materials
Duration: 50 minutes
Starter Activity (5 minutes)
Quick Recall
Write down everything you already know about selecting and working with materials. Then check against the key terms: D&T Exam Tips. Use a mini-whiteboard or paper.
Main Content (35 minutes)
Parent/Teacher Guide:
Before lesson: Read the script below. Pre-teach key vocab: D&T Exam Tips.
If stuck: Re-read the revision notes (link above), then break the content into smaller steps.
Extension: See the Stretch & Challenge ideas in Lesson 4.
Before lesson: Read the script below. Pre-teach key vocab: D&T Exam Tips.
If stuck: Re-read the revision notes (link above), then break the content into smaller steps.
Extension: See the Stretch & Challenge ideas in Lesson 4.
Teaching Script (35 mins):
Mins 0-5 - Hook: "Today: selecting and working with materials. By the end you will be able to answer exam questions on it unaided. It connects to the rest of Design and Technology because the ideas here recur across the spec."
Mins 5-20 - Direct Instruction: Work through the core ideas below one at a time; after each, ask your student to explain it back in their own words.
Mins 20-30 - Guided Practice: Model the worked example together, then let your student attempt the first practice question with guidance.
Mins 30-35 - Independent Practice: 2-3 practice questions from Lesson 3 below, with immediate feedback.
Mins 0-5 - Hook: "Today: selecting and working with materials. By the end you will be able to answer exam questions on it unaided. It connects to the rest of Design and Technology because the ideas here recur across the spec."
Mins 5-20 - Direct Instruction: Work through the core ideas below one at a time; after each, ask your student to explain it back in their own words.
Mins 20-30 - Guided Practice: Model the worked example together, then let your student attempt the first practice question with guidance.
Mins 30-35 - Independent Practice: 2-3 practice questions from Lesson 3 below, with immediate feedback.
First Look
Start with the revision notes summary, then attempt: Describe how to bend a 3 mm acrylic sheet to create a 90-degree stand using a line bender.
Plenary (5 minutes)
Check Out
Your student states one thing they learned and one question they still have about selecting and working with materials.
Lesson 2: Core Concepts: selecting and working with materials
Duration: 50 minutes
Starter Activity (5 minutes)
Review Previous Lesson
Quick recap: write 3 key points from Lesson 1 on selecting and working with materials. Check them against the notes below.
Main Content (35 minutes)
Key Fact: Timber working: tenon saw (straight cuts), coping saw (curves), chisel (paring and mortising), plane (flat surfaces), file/sandpaper (smooth finish). Jointing: PVA glue, screws, dowels, dovetails, mortise-and-tenon.
Key Fact: Metal working: hacksaw (cutting bar/flat stock), pillar drill (accurate holes), file (shaping and deburring), sheet metal snips (cutting thin sheet), tap and die (internal/external threads). Joining: soldering, brazing, welding, rivets, nuts and bolts.
Key Fact: Polymer working: laser cutter (2D profiles from sheet acrylic/MDF), line bender (folds acrylic along a heated element), strip heater, drill (slow speed to avoid melting). Joining: acrylic cement (capillary action), solvent weld (PVC), ultrasonic welding, snap-fit joints.
Key Fact: Workshop safety: tie hair back, no loose clothing, safety goggles for all cutting/drilling, clamp work in a vice, use push sticks on machinery, know emergency stop positions.
Key Fact: Material preparation: measure twice cut once, mark out with scribe (metal) or pencil/marking gauge (timber), allow for material removed by the saw blade (kerf), file edges to remove burrs.
D&T Exam Tips: For practical process questions: 1) Name the tool/process, 2) Describe the steps in order, 3) State safety precautions, 4) Name the material it is suitable for, 5) Explain why this process is appropriate.
| Term | Meaning | Example |
|---|---|---|
| PVA wood glue | Timber | Permanent |
| Dowel joint | Timber | Permanent |
| Screws | Timber/metal | Removable |
| Brazing | Copper/brass/steel | Permanent |
| MIG welding | Steel | Permanent |
| Solvent weld (Tensol) | Acrylic | Permanent |
Practice (10 minutes)
Q: Describe how to bend a 3 mm acrylic sheet to create a 90-degree stand using a line bender.
Answer: 1) Mark the bend line on the protective film. 2) Place acrylic over the line bender's heating element with the bend line directly above it. 3) Heat for 2-3 minutes until flexible. 4) Bend to 90 degrees against a former or jig. 5) Hold until the plastic cools and hardens (do not quench in water - causes stress cracking). 6) Remove protective film.
Plenary (5 minutes)
Explain Back
Your student teaches the key points back to you without looking. Fill any gaps immediately.
Lesson 3: Application: selecting and working with materials
Duration: 50 minutes
Starter Activity (5 minutes)
Quick Recall
Recall the key terms: D&T Exam Tips. Define each in one sentence.
Main Content (35 minutes)
Parent/Teacher Guide: Let your student attempt each question alone first, then compare with the model answer. Award method marks for correct working even if the final answer is wrong.
Q1: Describe how to bend a 3 mm acrylic sheet to create a 90-degree stand using a line bender.
Answer: 1) Mark the bend line on the protective film. 2) Place acrylic over the line bender's heating element with the bend line directly above it. 3) Heat for 2-3 minutes until flexible. 4) Bend to 90 degrees against a former or jig. 5) Hold until the plastic cools and hardens (do not quench in water - causes stress cracking). 6) Remove protective film.
Q2: Explain the difference between soldering and brazing, and when each would be used.
Answer: Soldering: joins metals using a filler alloy melting below 450 degrees C. Used for electrical connections, circuit boards, plumbing - low strength, low temperature. Brazing: joins metals using a filler (brass alloy) melting above 450 degrees C (typically 700-900 degrees C). Used for structural joints in bicycle frames, furniture - much stronger than soldering.
Q3: State four workshop safety rules when using a pillar drill.
Answer: 1) Always clamp the workpiece in a vice - never hold by hand. 2) Wear safety goggles - swarf can fly from the drill bit. 3) Use the correct drill speed - slow for large bits in metal, faster for small bits in wood. 4) Ease pressure on the drill as the bit breaks through the underside.
Plenary (5 minutes)
Error Review
Review any questions answered incorrectly. Identify whether the error was knowledge, method, or reading the question.
Lesson 4: Exam Practice: selecting and working with materials
Duration: 50 minutes
Starter Activity (5 minutes)
Command Words
Review what these command words require: state (one point), describe (say what happens), explain (say why), compare (both sides), evaluate (judgement).
Main Content (35 minutes)
Extended Answer
Extended question: Full-Mark Response You need to make a 3 mm acrylic display stand. Describe the complete making process from sheet material to finished product, including cutting, bending, joining and finishing, with appropriate safety precautions. <div class="
A grade 9 response will: 1) Marking out: draw the net on the acrylic's protective film. 2) Cutting: laser cut from 3 mm cast acrylic - ensure ventilation is on (fume extraction). 3) Bending: use a line bender - heat the bend line, bend to the required angle using a former, hold until cool. Safety: keep fingers away from the heating element. 4) Joining: apply acrylic cement (Tensol) using a fine brush - capillary action draws the solvent into the joint. Hold for 30 seconds. Safety: well-ventilated area, avoid skin contact. 5) Finishing: remove protective film, polish edges with wet-and-dry paper (240, 400, 600 grit), flame-polish edges with a blowtorch. Safety: keep blowtorch away from flammable materials.
Exam Tips: Describe processes step by step in chronological order - marks for sequence accuracy | Always include safety precautions when describing workshop processes | Know the difference between permanent joints (weld, solder, glue) and non-permanent (screws, bolts, nuts)
Common Errors: Watch Out! Students often make mistakes here. Wrong: A laser cutter can cut through any material including thick metal. Correct: Laser cutters used in schools typically have 40-60 W CO2 tubes that can cut: acrylic (up to approx 10 mm), MDF/plywood (up to approx 6 mm), card, paper, fabric. They CANNOT cut: metals (CO2 laser wavelength reflects off metal surfaces), PVC (releases toxic chlorine gas), polycarbonate (discolours and produces fumes). Material choice for laser cutting is restricted - always check compatibility.
Stretch & Challenge (Grade 8-9):
- Synoptic links: explain how selecting and working with materials connects to another Design and Technology topic you have studied
- Real-world: research one real-world use or example of selecting and working with materials
- Critical: "What are the limitations of the models used in selecting and working with materials?"
Plenary (5 minutes)
Assessment Criteria
- Got it: Confident explanation + correct worked examples
- Getting there: Main points OK, needs support with detail
- Not yet: Confused on key concepts - re-run Lesson 2
Homework & Consolidation
- Consolidation: Re-answer any Lesson 3 practice questions answered incorrectly (20 mins)
- Retrieval: Write flashcards for the key terms: D&T Exam Tips (10 mins)
- Exam practice: One past-paper question on selecting and working with materials from the board websites (15 mins)
- Extension: Explain selecting and working with materials to someone else in your own words (10 mins)