OCR H446 · Component 02

2.1.1 Thinking abstractly

Choose the details a model needs, explain its limits and apply abstraction to new situations.

Topic overview

Build accurate recall, then apply it.

RecallStride combines active flashcards, quick checks, exam practice and scheduled review. Progress is based on learning evidence rather than passive completion.

Devise a model to allocate rehearsal rooms to groups. Identify the data retained and one omitted detail.Apply
What does abstraction do when modelling a problem?Abstraction
Explain how abstraction can make a program easier to develop.Purpose
A walking route planner and a rail map show the same city. Why might they retain different details?Apply
Why can a model give a result that differs from reality?Models
A journey model ignores all waiting time. When could that make it unsuitable?Apply

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