SLR18 – Thinking abstractly (AS & A’Level) OCR A’LEVEL SLR18 Nature of abstraction OCR A’LEVEL SLR18 Need for abstraction OCR A’LEVEL SLR18 Abstraction & reality OCR A’LEVEL SLR18 Devise an abstract model Also in this topic... SLR11 – Networks (AS & A’Level) SLR16 – Computer related legislation (AS & A’Level) SLR17 – Ethical moral and cultural issues (AS & A’Level) SLR 22 – Thinking concurrently (A’Level Only) SLR 24 – Computational methods (A’Level Only)