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AQA-7552-1-DESIGN AND TECHNOLOGY FINAL MARK SCHEME-TECHNICAL PRINCIPLES-A LEVEL-Jun24-v1.0

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AQA-7552-1-DESIGN AND TECHNOLOGY FINAL MARK SCHEME-TECHNICAL PRINCIPLES-A LEVEL-Jun24-v1.0. 01 Give three reasons why cellulose acetate is used in packaging. 1 mark for each appropriate reason given. Maximum 3 marks. Indicative content • It is a transparent material that allows consumers to see products held within the packaging. • It can be formed into thin sheets that can then be successfully die cut. • It will naturally biodegrade reducing its environmental impact when disposed of. • It has a smooth surface that allows logos and branding to be successfully printed. • It is non toxic and food safe so it would be suitable for use with consumable items. • It is resistant to moisture (Do not accept waterproof) • It can be recycled along with paper based products. This list is not exhaustive. Accept any other valid responses. 3 marks AO4 1a 000005 Page 5 of 34 DESIGN AND TECHNOLOGY MARK SCHEME – A-LEVEL DESIGN AND TECHNOLOGY: PRODUCT DESIGN – 7552/1 – JUNE 2024 6 Qu Part Marking Guidance Total marks AO 02 Analyse and evaluate the suitability of using acrylonitrile butadiene styrene (ABS) for the manufacture of a construction worker’s helmet shown in Figure 1. Marks Description 5–6 marks The response includes detailed analysis and evaluation of the suitability of ABS for the manufacture of the helmet. The response makes reference to a range of appropriate factors, mostly relevant to the helmet context. 3–4 marks The response includes some good analysis and evaluation of the suitability of ABS for the manufacture of the helmet. The response covers several appropriate factors related to the context but may also include generic benefits of ABS. 1–2 marks The response includes basic analysis and tends to be descriptive rather than evaluative. 0 marks No response or nothing worthy of credit. Indicative content Acrylonitrile Butadiene Styrene (ABS) • Is a lightweight polymer that would make the helmet comfortable for use over extended periods of time. • Can be easily pigmented in vivid colours that make the worker easily visible on a construction site. It would also enable a range of other colours for different site-specific roles. • Is a tough material that would maintain its structure and protect the user if impact occurred from falling debris. • Is a thermoplastic that can be successfully injection moulded into the shape and profile of the construction worker’s helmet. • Is a polymer that will slowly degrade with exposure to UV and may become brittle and not fit for purpose over an extended period of time. • Is a polymer whose properties can be enhanced by the addition of UV stabilisers that will increase its useful lifespan in an outdoor environment. • Is impermeable to liquid so will be suitable for outdoor use in all weathers. • Will absorb heat from the sun which could make the helmet uncomfortable to wear. This list is not exhaustive.

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AQA
MARK SCHEME



A-level
DESIGN AND TECHNOLOGY:




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PRODUCT DESIGN




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7552/1



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Paper 1 Technical Principles




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Mark scheme
June 2024 H
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Version: 1.0 Final
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MARK SCHEME – A-LEVEL DESIGN AND TECHNOLOGY: PRODUCT DESIGN – 7552/1 – JUNE 2024



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.




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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




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schemes on the basis of one year’s document should be avoided; whilst the guiding principles of




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assessment remain constant, details will change, depending on the content of a particular examination
paper.

No student should be disadvantaged on the basis of their gender identity and/or how they refer to the




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gender identity of others in their exam responses.




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A consistent use of ‘they/them’ as a singular and pronouns beyond ‘she/her’ or ‘he/him’ will be credited in
exam responses in line with existing mark scheme criteria.

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Further copies of this mark scheme are available from aqa.org.uk
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MARK SCHEME – A-LEVEL DESIGN AND TECHNOLOGY: PRODUCT DESIGN – 7552/1 – JUNE 2024



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




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Start at the lowest level of the mark scheme and use it as a ladder to see whether the answer meets the




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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




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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.




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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




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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
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the level, ie if the response is predominantly level 3 with a small amount of level 4 material it would be
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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
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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
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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
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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.
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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.
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Indicative content in the mark scheme is provided as a guide for examiners. It is not intended to be
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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.
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An answer which contains nothing of relevance to the question must be awarded no marks.
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MARK SCHEME – A-LEVEL DESIGN AND TECHNOLOGY: PRODUCT DESIGN – 7552/1 – JUNE 2024



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]




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Their Accept an answer from the candidate if it has been inaccurately calculated
but is subsequently used in a further stage of the question.




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Questions which do not ask students to show working




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As a general principle, a correct response is awarded full marks.




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