A-level DESIGN AND TECHNOLOGY: PRODUCT DESIGN 7552/1 Paper 1 Technical Principles Mark scheme June 2022 Version: 1.0 Final

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A-level DESIGN AND TECHNOLOGY: PRODUCT DESIGN 7552/1 Paper 1 Technical Principles Mark scheme June 2022 Version: 1.0 Final 226A7552/1/MS* MARK SCHEME – A-LEVEL DESIGN AND TECHNOLOGY: PRODUC ... T DESIGN – 7552/1 – JUNE 2022 2 Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associates participate in and is the scheme which was used by them in this examination. The standardisation process ensures that the mark scheme covers the students’ responses to questions and that every associate understands and applies it in the same correct way. As preparation for standardisation each associate analyses a number of students’ scripts. Alternative answers not already covered by the mark scheme are discussed and legislated for. If, after the standardisation process, associates encounter unusual answers which have not been raised they are required to refer these to the Lead Examiner. It must be stressed that a mark scheme is a working document, in many cases further developed and expanded on the basis of students’ reactions to a particular paper. Assumptions about future mark schemes on the basis of one year’s document should be avoided; whilst the guiding principles of assessment remain constant, details will change, depending on the content of a particular examination paper. Further copies of this mark scheme are available from aqa.org.uk Copyright information AQA retains the copyright on all its publications. However, registered schools/colleges for AQA are permitted to copy material from this booklet for their own internal use, with the following important exception: AQA cannot give permission to schools/colleges to photocopy any material that is acknowledged to a third party even for internal use within the centre. Copyright © 2022 AQA and its licensors. All rights reserved. MARK SCHEME – A-LEVEL DESIGN AND TECHNOLOGY: PRODUCT DESIGN – 7552/1 – JUNE 2022 3 Level of response marking instructions Level of response mark schemes are broken down into levels, each of which has a descriptor. The descriptor for the level shows the average performance for the level. There are marks in each level. Before you apply the mark scheme to a student’s answer read through the answer and annotate it (as instructed) to show the qualities that are being looked for. You can then apply the mark scheme. Step 1 Determine a level Start at the lowest level of the mark scheme and use it as a ladder to see whether the answer meets the descriptor for that level. The descriptor for the level indicates the different qualities that might be seen in the student’s answer for that level. If it meets the lowest level then go to the next one and decide if it meets this level, and so on, until you have a match between the level descriptor and the answer. With practice and familiarity you will find that for better answers you will be able to quickly skip through the lower levels of the mark scheme. When assigning a level you should look at the overall quality of the answer and not look to pick holes in small and specific parts of the answer where the student has not performed quite as well as the rest. If the answer covers different aspects of different levels of the mark scheme you should use a best fit approach for defining the level and then use the variability of the response to help decide the mark within the level, ie if the response is predominantly level 3 with a small amount of level 4 material it would be placed in level 3 but be awarded a mark near the top of the level because of the level 4 content. Step 2 Determine a mark Once you have assigned a level you need to decide on the mark. The descriptors on how to allocate marks can help with this. The exemplar materials used during standardisation will help. There will be an answer in the standardising materials which will correspond with each level of the mark scheme. This answer will have been awarded a mark by the Lead Examiner. You can compare the student’s answer with the example to determine if it is the same standard, better or worse than the example. You can then use this to allocate a mark for the answer based on the Lead Examiner’s mark on the example. You may well need to read back through the answer as you apply the mark scheme to clarify points and assure yourself that the level and the mark are appropriate. Indicative content in the mark scheme is provided as a guide for examiners. It is not intended to be exhaustive and you must credit other valid points. Students do not have to cover all of the points mentioned in the Indicative content to reach the highest level of the mark scheme. An answer which contains nothing of relevance to the question must be awarded no marks. MARK SCHEME – A-LEVEL DESIGN AND TECHNOLOGY: PRODUCT DESIGN – 7552/1 – JUNE 2022 4 Glossary for maths If a student uses a method which is not explicitly covered by the mark scheme the same principles of marking should be applied. Credit should be given to any valid methods. Examiners should seek advice from their senior examiner if in any doubt. [a, b] Accept values between a and b inclusive. For π Accept values in the range [3.14, 3.142] Their Accept an answer from the candidate if it has been inaccurately calculated but is subsequently used in a further stage of the question. Questions which do not ask students to show working As a general principle, a correct response is awarded full marks. MARK SCHEME – A-LEVEL DESIGN AND TECHNOLOGY: PRODUCT DESIGN – 7552/1 – JUNE 2022 5 Qu Part Marking Guidance Total marks AO 01 State three reasons why Precious Metal Clay (PMC) may be used in the manufacture of a decorative pendant for a necklace. One mark per relevant point. Indicative content PMC: • is malleable and easy to mould and shape into an appropriate form • has an attractive aesthetic appearance • can be polished once fired • is less expensive than using a traditional metal such as gold and silver • it is able to be hallmarked to provide authenticity • will set to become hard and durable when fired. This list is not exhaustive. Accept any other valid responses. 3 marks AO4 1a MARK SCHEME – A-LEVEL DESIGN AND TECHNOLOGY: PRODUCT DESIGN – 7552/1 – JUNE 2022 6 Qu Part Marking Guidance Total marks AO 02 A purple component is to be produced using a pigmented resin. Use the data to calculate the maximum number of these components that could be produced. You may assume unlimited supplies of clear resin and magenta pigment. Cyan pigment available 10 ml Single component volume 5965 mm3 Clear Resin Cyan Pigment Magenta Pigment Ratios for Purple Resin 80 4 1 Establishing the volume of either the resin or pigment = 2.5 ml Magenta or = 200 ml Clear resin 1 mark (M1) Calculating the total volume 200 ml + 10 ml + 2.5 ml = 212.5 ml 1 mark (A1) Calculating the volume of one component 5965 mm3 = 5.965 cm3 = 5.965 ml 1 mark (M1) Calculating the total number of components that could be produced (their 212.5) (their 5.965) = 35.6 = 35 components or (their answer rounded down) components or 212.5 ml = 212 500 mm3 (their 212 500) 5965 = (their 35.62) = (their answer rounded down) components 1 mark (A1) Components Produced Where no working has been shown but final answer is accurate = 35 components 4 marks 4 marks AO4 1c MARK SCHEME – A-LEVEL DESIGN AND TECHNOLOGY: PRODUCT DESIGN – 7552/1 – JUNE 2022 7 Qu Part Marking Guidance Total marks AO 03 Figure 1 shows a low carbon steel shopping basket with a chrome plated finish. Figure 1 Analyse and evaluate the suitability of the material and finish used for the shopping basket. Marks Description 5–6 marks The response clearly shows detailed analysis and evaluation of how the properties of the material and the chosen finish affect the function and suitability of use of the shopping basket. 3–4 marks The response shows good evaluation and analysis of the suitability of the chosen material and chosen finish of the shopping basket with appropriate reference to its intended function. 1–2 marks Basic evaluation of the suitability of the chosen material and chosen finish of the shopping basket, but the response tends to be descriptive rather than evaluative or focuses only on either the material or finish. 0 marks No response or nothing worthy of credit. Indicative content Low Carbon Steel: • can be easily drawn into the thin round wire needed to construct the shopping basket • a malleable material that allows for component parts to be cold formed into shape without fracture • can be easily joined by spot welding • a lightweight material that enables the user to carry the basket comfortably • a tough material that will withstand the wear and tear of daily use • a stiff material that allows the basket to maintain its formed shape and withstand the weight of heavy shopping. Chrome Plated finish: • the electroplating process ensures an even coating of the intricate structure of the shopping basket • provides a corrosion resistant finish which protects the steel frame while maintaining the aesthetics of the basket 6 marks AO3 2a AO3 2b MARK SCHEME – A-LEVEL DESIGN AND TECHNOLOGY: PRODUCT DESIGN – 7552/1 – JUNE 2022 8 • provides a hard and durable finish that will withstand scratching when the baskets are stacked for storage • the finish allows the baskets to be cleaned in order to remain hygienic for the carrying of loose food products • the plating process can prevent the repair of the baskets if a weld should fail. This list is not exhaustive. Accept any other valid responses. MARK SCHEME – A-LEVEL DESIGN AND TECHNOLOGY: PRODUCT DESIGN – 7552/1 – JUNE 2022 9 Qu Part Marking Guidance Total marks AO 04 Explain how rapid prototyping has impacted on traditional manufacture. Marks Description 7–9 marks A detailed and thorough understanding of how rapid prototyping has impacted on traditional manufacture. The response clearly identifies the impact that rapid prototyping has had on manufacture. 4–6 marks The response demonstrates a good understanding of how rapid prototyping has impacted on traditional manufacture. Some relevant points relating to the impact on traditional manufacture are provided. 1–3 marks The response offers a basic understanding of the benefits of rapid prototyping with limited reference to the impact on traditional manufacture. 0 marks No response or nothing worthy of credit. Indicative Content • Rapid prototyping has allowed companies the ability to develop and produce fully functioning prototypes without a huge financial investment in the manufacture of moulds or ancillary components. • It has allowed for the design and manufacture of complex components that would have been prohibitive to manufacture traditionally. • Rapid prototyping has removed the need for highly skilled manufacturers and tool makers as complex designs can be easily achieved without tooling. • Traditional labour intensive manufacturing processes have b [Show More]

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