Cheat sheet
A cheat sheet is a short sheet of notes for quick reference. The word has two meanings. A hidden note smuggled into a test is cheating. A one- or two-page summary of formulas, commands or facts, also called a crib sheet, is a normal study and work tool, and it is allowed in an exam when the course says so.
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In more detail
Cheat sheet is used in two ways. The older meaning is a hidden note with answers that someone sneaks into a test. That is cheating. The meaning most people use today is a quick reference: one or two pages that boil a topic down to what you need to look up. Programmers keep cheat sheets of commands and syntax, such as git or regular expressions. Students make them for formulas, definitions and dates. To avoid the cheating sense, many teachers say formula sheet, reference sheet or note card instead.
Other names for the same thing: crib sheet, crib notes, aide-memoire, quick reference, reference card, and job aid at work. Other languages have their own words, like Spickzettel (German), chuleta (Spanish) and antisèche (French).
The value of a cheat sheet is the act of making it. To fit a whole topic on one page you have to decide what actually matters and cut the rest. That sorting forces you to process the material, so the sheet is a study tool long before the exam starts.
A common mistake is copying everything. Space is limited, and a wall of text is slow to search under pressure. Leave off the facts you already know cold and keep only the ones you trip on. If you do not understand a line, it does not belong on the sheet.
Hidden cheat sheet vs allowed cheat sheet
| Hidden cheat sheet | Allowed cheat sheet | |
|---|---|---|
| What it is | A concealed note with answers | A quick reference of formulas, definitions or commands |
| Where you find it | Smuggled into a test | Open-note exams, formula sheets, desks at work, coding |
| Is it allowed? | No, it counts as academic misconduct | Yes, if the instructor or workplace permits it |
| What makes the difference | Nobody approved it | The rules say how big it may be and what it may hold |
Example
A physics student preparing for an open-note midterm splits one page into three columns: mechanics, waves, and electricity. Under each heading go only the formulas she keeps mixing up, like the lens equation and the wave-speed relation. The stuff she knows by heart stays off, so the page stays scannable.
How to use it
- 1
Check the exam rules first: is a sheet allowed, how big, handwritten or printed, one side or both.
- 2
List every formula, definition, and fact the topic could test.
- 3
Cross out anything you already remember reliably. Keep only the weak spots.
- 4
Group what remains under clear headings by topic or by when you would use it.
- 5
Use columns, color, and short phrases so you can find an item in seconds.
How StudyPDF does this
StudyPDF can generate a cheat sheet from your uploaded course material: a dense reference sheet built to be printed, with the key formulas and definitions and a citation to the exact page. You can scope it to a lecture, a topic or your weakest concepts, and export it as a PDF. Check your course rules before you bring one to an exam.
See also
Common questions
Can you give me an example of a cheat sheet?
Three common ones. An exam sheet: one page in three columns of formulas you keep mixing up, such as the quadratic formula and the lens equation. A programming sheet: git status, git add, git commit and git push with one line on what each does. A language sheet: a table of verb endings by tense. All three fit on a page and hold only what you look up.
Are cheat sheets allowed in exams?
Only when the instructor says so. Open-note and formula-sheet exams allow one, often limited to one or two pages, sometimes handwritten only. In a closed exam a hidden sheet counts as cheating and can end in a failed exam or worse. Read the syllabus or ask before you bring anything.
What is another word for cheat sheet, and why is it called that?
Crib sheet, aide-memoire, quick reference, formula sheet or job aid. The name comes from the old use, a sheet that let you cheat by looking up answers. The name stuck even for sheets that are allowed and are just a quick reference.
Should I handwrite or type my cheat sheet?
Handwriting usually wins for memory, since writing each line forces you to process it. Typing wins when you need to fit more on the page or you want to reorganize quickly. If the sheet is mostly a study aid, write it by hand. If space is the constraint, type it.
Is making a cheat sheet useful even if I can't bring it to the exam?
Yes. Most of the benefit comes from deciding what to include and condensing it, which is active recall in disguise. Many students build one as a last review pass and never look at it during the test.
Put it to work on your own course
Upload your lectures and ask Bo. Cited answers, plus flashcards, exams, and more built from your material.