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The notes clarify teaching and assessment coverage of four learning topics—materials, mechanisms, standard components, and manufacturing/fabrication processes—aligned with Strand 2 and Module 3. Students are given guidance on knowing applications for items marked in brackets, supporting implementation from Secondary 4 starting from the 2022/23 school year.",{"@graph":69,"@context":123},[70,84,106],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/dat-curriculum-and-assessment-guide-secondary-4-to-6-supplementary-notes/289576/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/dat-curriculum-and-assessment-guide-secondary-4-to-6-supplementary-notes/289576.png","ImageObject",300,407,{"name":92,"@type":93},"Blitz","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-23","2026-09-17",true,{"@type":102,"interactionType":103,"userInteractionCount":105},"InteractionCounter",{"@type":104},"ViewAction",13,{"@type":107,"mainEntity":108},"FAQPage",[109,115,119],{"name":110,"@type":111,"acceptedAnswer":112},"What is the purpose of the DAT supplementary notes released in December 2020?","Question",{"text":113,"@type":114},"They clarify the coverage of four learning topics for teaching and assessment aligned with Strand 2 and Module 3.","Answer",{"name":116,"@type":111,"acceptedAnswer":117},"Which four learning topics are covered in the supplementary notes?",{"text":118,"@type":114},"Materials, mechanisms, standard components, and manufacturing/fabrication processes.",{"name":120,"@type":111,"acceptedAnswer":121},"What guidance is provided for students for items marked within brackets?",{"text":122,"@type":114},"Students are only required to name and be aware of their application in the design and make processes.","https://schema.org",{"og:url":83,"og:type":125,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":127,"canonical":83},"index,follow",{"doc_id":129,"site_id":62},289576,1789635781,{"code":4,"msg":5,"data":132},{"doc_id":129,"user_id":133,"nickname":92,"user_avatar":134,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":135,"file_id":136,"file_url":137,"file_type":138,"file_size":139,"view_count":105,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":81,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":130,"read_time":39},24464137899374,"https://us-avatar.wpscdn.com/davatar_3d24733baf745e90a7e4bdd5f77d97b2","[December 2020]  \nDesign and Applied Technology (DAT) Curriculum and Assessment Guide (Secondary 4 to 6) -Supplementary Notes  \nJointly prepared by the Curriculum Development Council and the Hong Kong Examinations and Assessment Authority Recommended for use in schools by the Education Bureau, HKSARG  \nDecember 2020  \n(To be implemented at Secondary 4 starting from the 2022/23 school year, leading to the Hong Kong Diploma of Secondary Education (HKDSE) DAT Examination in 2025 and thereafter.)  \nThe curriculum and assessment framework in the DAT Curriculum and Assessment Guide (Secondary 4 -6) (2015) remains unchanged.  \nThe supplementary notes serve to clarify the coverage of the following four learning topics as specified in “Strand 2-Technological Principles” and “Module 3-Design Implementation and Material Processing”of the curriculum for teaching and assessment purposes:  \n􀀁 Materials;  \n􀀁 Mechanisms;  \n􀀁 Standard components; and  \n􀀁 Manufacturing/fabrication processes.  \nA. The following table shows the coverage of the four learning topics.  \nNotes:  \nFor items marked within [ ], students are only required to name and be aware of their application in the design and make processes.  \n\n| Topics | Items |\n| --- | --- |\n| Materials | 􀀂 Woods\u003Cbr>Softwoods: pine, spruce, [cedar]\u003Cbr>Hardwoods: balsa, beech, birch, oak, san cheong, teak, poplar,[cherry, mahogany, walnut]\u003Cbr>Manufactured boards: blockboard, particle board, medium-density fibreboard (MDF), plywood\u003Cbr>􀀂 Metals\u003Cbr>Ferrous and its alloys: cast iron, carbon steel, mild steel, stainless steel, galvanised steel, [high speed steel, tool steel]\u003Cbr>Non-ferrous and its alloys: aluminium, brass, bronze, copper, lead, tin, zinc, [duralumin, tungsten carbide]\u003Cbr>􀀂 Polymers\u003Cbr>Thermoplastics: acrylonitrile butadiene styrene (ABS),\u003Cbr>acrylic/polymethyl methacrylate (PMMA), nylon/polyamide (PA), polyethylene terephthalate (PET), polypropylene (PP), polystyrene |\n\n[December 2020]  \n\n|  | (PS), expanded polystyrene (EPS), extruded polystyrene (XPS), polyvinyl chloride (PVC), [high-density polyethylene (HDPE), lowdensity polyethylene (LDPE), polycarbonate (PC),\u003Cbr>Teflon/polytetrafluoroethylene (PTFE), polylactic acid (PLA), polyoxymethylene (POM)]\u003Cbr>Thermosetting plastics: epoxy resin (ER), polyester resin (PR), polyurethane (PU), urea-formaldehyde (UF) resin\u003Cbr>Elastomer: synthetic rubber, silicon rubber\u003Cbr>􀀂 Others (include materials for model making, composites and smart materials)\u003Cbr>ceramics, cardboards, corrugated boards, [kraft, plaster of Paris, shape memory alloys, carbon fibres, glass fibres, thermo-ceramics, nano-materials, materials for making solar panels and liquid crystal display (LCD)] |\n| --- | --- |\n| Mechanisms | cam and follower, rack and pinion, ratchet and pawl, slider crank, linkages, levers, spur gears, bevel gears, worms and worm wheels, belts and pulleys, sprockets and chains, simple gear trains, [compound gear trains, timing belts and pulleys] |\n| Standard component | bolts and nuts, screws, washers, nails, hinges and latches, knock-down fittings, rivets, pop rivets, ball bearings, roller bearings, pins/keys |\n| Manufacturing/fabrication processes | 􀀂 Joining\u003Cbr>temporary and permanent fixings, assembly and joint using a range of frame and carcase construction, joint with adhesives, solventsand mechanical methods, hard and soft soldering, riveting and screwing, welding\u003Cbr>􀀂 Forming\u003Cbr>cutting by hand tools, shaping by hand tools, laminating, bending, vacuum forming, injection moulding, blow moulding, rotational moulding, forging, rolling, pressing, 3D printing, sintering, [deep drawing, compression moulding, extrusion, spinning]\u003Cbr>􀀂 Finishing\u003Cbr>polishing, coating, painting, anodising, varnishing, sanding, plating, veneering\u003Cbr>􀀂 Machining\u003Cbr>drilling, turning, sawing, milling, routing, etching, laser cutting,[spark erosion, melting, water jet cutting]\u003Cbr>􀀂 Casting\u003Cbr>[sand casting, die casting]\u003Cbr>􀀂 Heat treatment\u003Cbr>[annealing, hardening, case hardeni","cbCaiqoclt5UYvr1","https://ap.wps.com/l/cbCaiqoclt5UYvr1","pdf",54907,"English","# Learning topic coverage\n## Materials\n## Mechanisms\n## Standard components\n## Manufacturing/fabrication processes\n# Placement in curriculum framework\n## Strand 2: Technological Principles (P.15-16)\n## Module 3: Design Implementation and Material Processing (P.25)","[{\"question\":\"What is the purpose of the DAT supplementary notes released in December 2020?\",\"answer\":\"They clarify the coverage of four learning topics for teaching and assessment aligned with Strand 2 and Module 3.\"},{\"question\":\"Which four learning topics are covered in the supplementary notes?\",\"answer\":\"Materials, mechanisms, standard components, and manufacturing/fabrication processes.\"},{\"question\":\"What guidance is provided for students for items marked within brackets?\",\"answer\":\"Students are only required to name and be aware of their application in the design and make processes.\"}]","DAT Curriculum and Assessment Guide (Secondary 4 to 6) -Supplementary Notes | PDF"]