Cambridge A Level Design and Technology 9705 — 2014 Oct/Nov Paper 3 · Variant 3

This document consists of 10 printed pages and 2 blank pages. DC (LK/AR) 85706/2 © UCLES 2014 [Turn over Cambridge International Examinations Cambridge International Advanced Subsidiary and Advanced Level * 6 2 9 0 5 6 2 2 2 3 * DESIGN AND TECHNOLOGY 9705/33 Paper 3 October/November 2014 3 hours Additional Materials: Answer Booklet/Paper A range of design drawing equipment A3 Drawing Paper (5 sheets) READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use an HB pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Section A Answer two questions from one of the Parts A, B or C. Section B Answer one question. All dimensions are in millimetres. The instruction ‘discuss’ denotes that you should: • examine critically the issues raised by the question; • explain and interpret these issues as appropriate; • introduce evidence wherever possible to support conclusions of arguments. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question.

2 9705/33/O/N/14 © UCLES 2014 Section A Answer two questions from Parts A, B or C. Part A – Product Design 1 item: film for wrapping food process: calendering item: wood section for mirror frame process: profile moulding 35 100 80 R10 item: dovetail cross slide process: milling Fig. 1 Choose two of the items shown in Fig. 1 and for each: (a) use notes and sketches to describe the manufacture of the item using the process given; [7  2] (b) explain why the process is particularly suitable for the production of the item. [3  2]

3 9705/33/O/N/14 © UCLES 2014 [Turn over 2 Fig. 2 shows the parts of a screwdriver. 80 120 handle Ø6 hole 6 deep Ø30 blade Ø6 Fig. 2 Select either the handle or the blade. Write down your choice. (a) State a suitable material for your chosen part and give two reasons for your choice. [3] (b) Describe, using notes and sketches, how you would make your chosen part. Include details of how you would shape and finish the part to a high standard. [9] (c) Explain the changes which may be necessary to the design, the manufacturing method used and the material selected, if 1000 parts were required. Use notes and sketches to support your answer. [8] 3 Discuss the issues to be considered when deciding upon the retail price for a product. [20]

4 9705/33/O/N/14 © UCLES 2014 Part B – Practical Technology 4 Fig. 3 shows a gear train. 20 teeth 30 teeth 40 teeth 20 teeth D A Fig. 3 (a) (i) Gear A rotates anti-clockwise, state the direction of rotation of gear D. [1] (ii) Calculate the gear ratio of the gear train shown in Fig. 3. [3] (b) Fig. 4 shows a loaded beam. A B 2400 4600 2000 100N 150N Fig. 4 Calculate the reactions at A and B. [4] (c) Many manufactured structures have to be reinforced to ensure stability, reliability and safety. Explain, using notes and sketches, three different ways in which manufactured structures can be reinforced. [12]

5 9705/33/O/N/14 © UCLES 2014 [Turn over 5 Fig. 5 shows four methods of transferring motion. A B C D Fig. 5 (a) Name the methods of transferring motion shown in Fig. 5. [4] (b) For each of the methods shown in Fig. 5, select a different product or application and explain why the method selected is appropriate. [4  3] (c) For one of the methods shown in Fig. 5, explain how the choice of materials affects performance. [4] 6 Material may be cut and removed by the use of: • wedge shaped cutting tools; • heat; • a shearing action. Select two of the methods above and for each: (a) use notes and sketches to describe an example of its appropriate use; [2  7] (b) explain why the method is particularly suitable. Use notes and sketches to describe in detail the key features of methods chosen. [2  3]

6 9705/33/O/N/14 © UCLES 2014 Part C – Graphic Products 7 Fig. 6 shows a diagram of a writing desk with the lid lowered. lid P fixed pivot moving pivot 500 500 75 300 1000 120° 100 Fig. 6 (a) To an appropriate scale, plot the loci of point P as the lid is closed. [12] (b) Describe in detail how you would model the opening and closing mechanism to ensure that it works effectively. Use notes and sketches to support your answer. [8] 8 Graphic designers use a range of methods and techniques to record and display information, ideas and processes. Use notes and sketches to explain the following and give an appropriate example of each. • Flow charts • Pie charts • Pictograms • Ideograms [4  5]

7 9705/33/O/N/14 © UCLES 2014 [Turn over 9 Fig. 7 shows a component from a child’s construction toy. regular hexagon hole 50 AF square hole side 20 R50 R20 40 20 20 10 120 Fig. 7 Construct a full size isometric drawing of the component. Use thick and thin line technique to enhance the drawing. [20]

8 9705/33/O/N/14 © UCLES 2014 Section B Answer one question on the A3 paper provided. You should approach the design question of your choice in the following manner: Analysis Produce an analysis of the given situation/problem, which may be in written or graphical form. [5] Specification From the analysis produce a detailed written specification of the design requirements. Include at least five specification points other than those given in the question. [5] Exploration Use bold sketches and brief notes to show your exploration of ideas for a design solution, with reasons for selection. [25] Development Show using bold sketches and notes, the development, reasoning and composition of ideas into a single design proposal. Give details of materials, constructional and other relevant technical details. [25] Proposed solution Produce drawings of an appropriate kind to show the complete solution. [15] Evaluation Give a written evaluation of the final design solution. [5] [Total: 80]

9 9705/33/O/N/14 © UCLES 2014 [Turn over 10 A school wishes to develop new resources to make learning for younger children more interesting and exciting. Design an interactive resource to help young children to improve their learning of the basics of addition and subtraction. The resource must: • have a range of different activities; • include the easy storage of parts. 11 Some school sports equipment can be dangerous when being transported by staff and senior students to the sports field. Design a product to transport javelins to the sports field. The product must: • transport up to 10 javelins; • hold the javelins securely while being transported. To assist you in your design, details of a javelin are shown in Fig. 8. 150 1000 max Ø30 min overall length 2200 max overall length 2700 Fig. 8

10 9705/33/O/N/14 © UCLES 2014 12 Many sports clubs serve hot drinks. There is a concern that the disposable cups used to serve the drinks do not insulate well and transporting the drinks can be dangerous. Design a product to transport hot drinks in disposable cups, for a sports club of your choice. The product must: • hold up to four cups; • include graphics to reflect the image of your chosen sports club. To assist you in your design, details of the disposable cup are shown in Fig. 9. Ø70 90 lip overhang 2mm Ø55 Fig. 9

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12 9705/33/O/N/14 © UCLES 2014 Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. BLANK PAGE

® IGCSE is the registered trademark of Cambridge International Examinations. CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge International Advanced Level MARK SCHEME for the October/November 2014 series 9705 DESIGN AND TECHNOLOGY 9705/33 Paper 3, maximum raw mark 120 This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. It shows the basis on which Examiners were instructed to award marks. It does not indicate the details of the discussions that took place at an Examiners’ meeting before marking began, which would have considered the acceptability of alternative answers. Mark schemes should be read in conjunction with the question paper and the Principal Examiner Report for Teachers. Cambridge will not enter into discussions about these mark schemes. Cambridge is publishing the mark schemes for the October/November 2014 series for most Cambridge IGCSE®, Cambridge International A and AS Level components and some Cambridge O Level components.

Page 2 Mark Scheme Syllabus Paper Cambridge International A Level – October/November 2014 9705 33 © Cambridge International Examinations 2014 Section A Part A – Product Design 1 (a) description of process – fully detailed 3–5 – some detail, 0–2 quality of sketches up to 2 7 × 2 [14] (b) calendaring – large sheets produced/cut to size – even thickness, easily set – effective use of material, no wastage Profile moulding – one step production, very quick – consistent section – high quality finish Milling – high quality finish, accurate angle – one piece production – difficult material removal otherwise/separate assembly needed 3 × 2 [6] [Total: 20] 2 (a) suitable material: handle blade – appropriate hardwood – high carbon steel – aluminium – silver steel – mild steel – mild steel (case hardened) – nylon/abs 1 Reasons: handle blade – can produce high quality finish – can be forged to shape – comfortable to hold/grip – strong in torsion – easy to turn/machine – stiff 2 × 1 [3] (b) description to include: quality of description: – fully detailed 3–7 – some detail, 0–2 quality of sketches up to 2 [9]

Page 3 Mark Scheme Syllabus Paper Cambridge International A Level – October/November 2014 9705 33 © Cambridge International Examinations 2014 (c) explanation could include: – change in process; – change in materials; – use of jigs, formers, moulds; – simplification of design. Quality of explanation: – logical, structured 4–6 – limited detail, 0–3 quality of sketches up to 2 [8] [Total: 20] 3 Discussion could include: – material/production cost – volume of production – marketing/advertising – type of product – target market – energy/profit mark-up and other costs Examination of issues – wide range of relevant issues 5–9 – limited range 0–4 Quality of explanation – logical, structured 4–7 – limited detail, 0–3 Supporting examples/evidence – specific products – specific materials/manufacturing methods – specific details of market 4 [Total: 20]

Page 4 Mark Scheme Syllabus Paper Cambridge International A Level – October/November 2014 9705 33 © Cambridge International Examinations 2014 Part B – Practical Design 4 (a) (i) anticlockwise [1] (ii) 2 × 3 [1] = 6 [1] = 3:1 [1] [3] 1 2 2 (b) 2400 × 100 + 4400 × 150 = 9000 × B 2 B = 900000 = 100 N 2 [4] 9000 (c) ways could be: – gussets, braces, ribs, lamination, triangulation Quality of explanation: – logical, structured 6–10 – limited detail, 0–5 quality of sketches 2 [12] [Total: 20] 5 (a) – bevel gears 1 – sprocket and chain 1 – worm and worm wheel 1 – pulley 1 [4] (b) for each: product/application 1 quality of explanation up to 2 [4 × 3] (c) explanation could include: – weight – friction – noise – wear Quality of explanation: – logical, structured 3–4 – limited detail, 0–2 [4] [Total: 20]

Page 5 Mark Scheme Syllabus Paper Cambridge International A Level – October/November 2014 9705 33 © Cambridge International Examinations 2014 6 wedge shaped tool – chisel, lathe tool, drill Heat – welding/cutting torch, laser cutter Shearing action – guillotine, tin snips (a) quality of description – clear, fully detailed 3–5 – some detail 0–3 quality of sketching up to 2 [2 × 7] (b) quality of explanation: – logical, structured 3–4 – limited detail 0–2 [2 × 3] [Total: 20]

Page 6 Mark Scheme Syllabus Paper Cambridge International A Level – October/November 2014 9705 33 © Cambridge International Examinations 2014 Part C – Graphic Products 7 (a) initial construction accuracy 3 loci construction 5 loci accuracy 2 quality of overall communication 2 [12] (b) description to include: – details of materials used – details of construction – effective movement check Quality of description – clear, fully detailed 4–6 – some detail 0–3 quality of sketching up to 2 [8] [Total: 20] 8 Flow charts – chart showing logical order of process Pie charts – circular chart showing proportion Pictograms – resemble what they signify Ideograms – graphic symbol that reflects idea or concept, (also Chinese characters) Quality of explanation: – logical, structured 4–5 – limited detail 0–3 [4 × 5] [Total: 20]

Page 7 Mark Scheme Syllabus Paper Cambridge International A Level – October/November 2014 9705 33 © Cambridge International Examinations 2014 9 Correct isometric [2] scale [1] detail – circles [3] – central rib [2] – base tangents [2] – square [2] – hexagon [3] – thick and thin line [2] Quality of line/construction [3] [Total: 20]

Page 8 Mark Scheme Syllabus Paper Cambridge International A Level – October/November 2014 9705 33 © Cambridge International Examinations 2014

Page 9 Mark Scheme Syllabus Paper Cambridge International A Level – October/November 2014 9705 33 © Cambridge International Examinations 2014 Section B Analysis Analysis of the given situation/problem. [5] Specification Detailed written specification of the design requirements. At least five specification points other than those given in the question. [5] Exploration Bold sketches and brief notes to show exploration of ideas for a design solution, with reasons for selection. – range of ideas [5] – annotation related to specification [5] – marketability, innovation [5] – evaluation of ideas, selection leading to development [5] – communication [5] Development Bold sketches and notes showing the development, reasoning and composition of ideas into a single design proposal. Details of materials, constructional and other relevant technical details. – developments [5] – reasoning [5] – materials [3] – constructional detail [7] – communication [5] Proposed solution Produce drawing/s of an appropriate kind to show the complete solution. – proposed solution [10] – details/dimensions [5] Evaluation Written evaluation of the final design solution. [5] [Total: 80]