A model answer walks you through how to earn each mark, not just what the mark scheme lists. 8,843 questions across 25 courses have one so far.
Or stay on the Free plan: 3 questions a day, with mark schemes.
Estimate the age of the Universe from the gradient of a v against d graph; state the acceleration modification and the dark energy proposed to explain it.
The model answer is ALN's own worked explanation, not the exam board's mark scheme. Premium shows one beside every question that has one. Check coverage for your course.
Tick every course you're studying, from any exam board. You can change them at any time.
Open past-paper questions by topic or by paper. Try each one, then mark it right or wrong.
Open the Model answer tab for the step-by-step answer, and come back to the ones you got wrong.
Every course has its questions grouped by topic and by paper, plus Paper Analysis of what the papers ask most.


Questions: pick a paper and topic, open the question, check the mark scheme and mark your attempt.
Filter past-paper questions by topic, paper, year, marks and difficulty, then mark each attempt right or wrong.
See how often each part of the specification came up in the papers we hold, and open the questions behind the count.
Teachers pick questions from the same bank, set them as assignments with a due date, and follow completion.
Saved attempts, accuracy, a seven-day activity chart and open assignments in one place.
Every plan has the same past-paper questions and mark schemes. Premium adds the step-by-step model answers.
Everything in Basic, plus:
28 courses have model answers so far, and some cover only part of the course. See which courses and papers.
Explanations and worked examples with linked exam practice. Notes isn't part of any plan while the library is being written.
Open today to accounts studying AQA · A-level Computer Science, and to a few testers.
Practise real past-paper questions, then check the step-by-step model answer.
No card needed for the Free plan