Document comparison
Compare before and after. What changed?
Before: Receipt required: every refund.
After: Receipt required: refunds over $50.
Identify a direct change and its practical consequence.
6 questions · No time limit
Find the change
6 questions · No time limit
Highlighted wording changed between versions. Use the explanation to distinguish a change in meaning from a rewording.
- Correct answers
- Time
Your score reflects these six questions, not a reading level or assessment.
Review your answers
Optional and off by default. Share starts, completions, replays and error categories. For visits from ChatGPT, starts and completions can also include the first QuickenBrain page and broad country. No answers, drawings or names.
How this data is usedHow to practise
Compare the Before and After versions. Pick the answer that describes the stated change, without adding an assumption. Both versions stay visible while you answer.
Choose one answer, then check it. Read the explanation before continuing. You can change your choice until you check it.
The clock counts time spent on questions while this page is visible. Explanations and answer review are not timed. There is no time limit.
These are original, fictional examples. Only your difficulty, score, and active time are saved. The documents and your individual answers are not saved.
About this practice
Learn a method
Find the point of a comparisonCompare before and after. What changed?
Report a problem
Optional and off by default. Share starts, completions, replays and error categories. For visits from ChatGPT, starts and completions can also include the first QuickenBrain page and broad country. No answers, drawings or names.
How this data is used