A

Criterion A: Knowing & Understanding

This criterion tests how well you know and can use scientific knowledge: facts, concepts, terminology and laws. Top marks come from explaining ideas and applying them to unfamiliar situations — not just recalling them.

How it's marked

  • 1–2: Recall a few facts with big gaps.
  • 3–4: State scientific knowledge with some accuracy.
  • 5–6: Describe knowledge and apply it in familiar situations.
  • 7–8: Explain knowledge and apply it to solve problems in unfamiliar situations.

Train Criterion A

Topic quizzes

State → Describe → Explain questions with marks, word banks and AI-marked written answers.

Flashcards

Flip through key facts and definitions for every topic, year by year.

Sim Lab

17 interactive simulations — build circuits, balance levers, run natural selection and more.

Study Plan scan

A quick diagnostic finds your weak topics and builds a personalised revision plan.