GCSE Computer Science
Mae disgrifiadau'r TGAU yn Saesneg yn unig, gan eu bod wedi eu cymryd o fanyleb Saesneg CBAC.
Numeracy is heavy and specific: learners convert between denary, binary and hexadecimal, add in binary, work with base 2 storage units, calculate image, sound and compressed file sizes and routing costs, and reason with truth tables and DIV and MOD. Literacy centres on close reading of the Unit 2 scenario and requirements, precise technical vocabulary, short and extended judgement answers in Unit 1, and code annotation and test commentaries. The single biggest thing Key Stage 3 should build is fluent place value in base 2 and base 16, so that storage and file size calculations become routine.
- Addysgu gyntaf
- Medi 2025
- Faint o waith llythrennedd
- Canolig
- Faint o waith rhifedd
- Uchel
- Manyleb
- Agor manyleb CBAC (PDF)
Sut mae'r TGAU hwn yn cael ei asesu
- Unit 1: Understanding Computer Science: Digital examination 1 hour 30 minutes, 50%, 80 marks
- Unit 2: Computer Programming: On-screen examination based on a pre-released brief, 2 hours, 50%, 80 marks, set and marked by WJEC
Sgiliau sy'n defnyddio Deall, ymateb a dadansoddi
-
Reading a scenario, its requirements and given code
Learners analyse a set of requirements from the pre-released scenario and read, evaluate and extend given Python code. They sit the examination with a clean copy of the brief and no notes, so close reading and recall of the scenario matter.
Llythrennedd: Strategaethau darllen, Deall, ymateb a dadansoddi
Paratoi disgyblion
- Blwyddyn 7
- Pupils highlight the must-have features in a short written brief for a class quiz program and turn them into a numbered checklist before they start coding.
- Blwyddyn 8
- Pupils read a one-page scenario for a school canteen ordering app, underline each requirement and write three questions a programmer would need to ask the client.
- Blwyddyn 9
- Pupils read a short given Python program alongside its brief, annotate which lines meet each requirement and note one requirement the code does not yet meet.
Dangos geiriad y fanyleb a datganiadau'r Fframwaith Llythrennedd a Rhifedd
Ble mae yn y fanyleb: Unit 2, Section 2.1.1 Investigation, page 23
“analyse a set of requirements”
Cam cynnydd 3
Rwy'n gallu defnyddio ystod o strategaethau er mwyn dod o hyd i wybodaeth, e.e. cip ddarllen (sgimio) am yr hanfodion, llithr ddarllen (sganio) am fanylion.
Rwy'n gallu darllen yn fanwl, gan adnabod a nodi nodweddion testunau, e.e. cyflwyniad, dilyniant, darluniau, ffurfioldeb, geirfa allweddol.
Rwy'n gallu dangos fy mod yn deall y prif syniadau a manylion pwysig mewn gwahanol destunau ar yr un pwnc a'u defnyddio.
Cam cynnydd 4
Rwy'n gallu darllen a chanolbwyntio ar destunau a argraffwyd a thestunau digidol sy'n newydd i mi a diweddaru, ehangu a dyfnhau fy nealltwriaeth o wybodaeth, syniadau a materion.
Rwy'n gallu defnyddio ystod o strategaethau, e.e. darllen cyflym, darllen agos, anodi, rhagfynegi, i gip ddarllen (sgimio) testunau i gael yr hanfodion, y syniadau a’r themâu allweddol, a’u llithr ddarllen (sganio) am wybodaeth fanwl.
Rwy'n gallu darllen yn fanwl, gwneud gwaith dilynol a defnyddio deunyddiau ychwanegol mewn testunau i ymestyn fy nealltwriaeth.
Cam cynnydd 5
Rwy'n gallu darllen a dadansoddi ystod o destunau nas gwelais o'r blaen, testunau a argraffwyd a thestunau digidol, gan ganolbwyntio ac yn annibynnol.
Rwy'n gallu defnyddio ystod o strategaethau, e.e. darllen cyflym, darllen agos, anodi, rhagfynegi, i gip ddarllen (sgimio) testunau i gael yr hanfodion, y syniadau a’r themâu allweddol, a’u llithr ddarllen (sganio) am wybodaeth fanwl, gan ddethol a gwneud sylwadau aeddfed ar y syniadau a’r themâu allweddol.
Rwy'n gallu darllen yn fanwl, gan ddadansoddi cynnwys, iaith ac effaith testunau er mwyn dyfnhau fy nealltwriaeth.
Da gwybod
- No marks are set aside for spelling, punctuation and grammar. The assessment objectives on page 28 cover only knowledge (AO1), application (AO2) and analysis (AO3), so accuracy of language is not separately credited.
- Both units are answered on screen, page 5: Unit 1 is a "Digital examination: 1 hour 30 minutes" and Unit 2 is an "On-screen examination based on a pre-released brief: 2 hours". Pupils need to type extended answers and calculations.
- The specification does not say whether a calculator is allowed in either unit, so centres should check the WJEC instructions for each series. Pupils should be able to do binary, hexadecimal and storage calculations by hand.
- No notes are allowed into the Unit 2 examination, page 28: "learners are not permitted to take any prompts or notes into the examination." A clean copy of the pre-release is provided.
- Unit 1 mixes question types, page 5: "Questions requiring objective responses, short and extended answers."
- Storage units use 1,024, not 1,000, page 13: "kilobyte (i.e. 1,024 bytes)". Pupils who learn 1,000 in Science or Mathematics need the difference made explicit.
- Appendix B, pages 34 to 36, fixes the operators and pseudocode conventions used in questions: "Logical operators AND OR NOT XOR will be in upper case." DIV and MOD are defined with worked examples such as "11 MOD 2 = 1".
- Appendix A, page 32, marks the numeracy strands for geometry and measurement and for statistics and probability as N/A for both units, so there is no graphing or statistics demand.
Cysylltiadau â TGAU eraill
Place value, powers, ratio and percentage reduction are taught in Mathematics, so agreeing shared language (for example 'column value' and 'simplest form') with the Mathematics department in Years 7 to 9 will help pupils transfer these skills to binary and file size work.
Ffynhonnell: WJEC GCSE Computer Science specification, teaching from 2025, for award from 2027, Version 3, September 2025.