Turn your index and zepto notes into flashcards with AI
Upload a PDF, slide deck, set of notes or a photo of a page. DeckOwl builds flashcards on index laws and SI prefixes like zepto, then schedules reviews so they stick.
How to study index notation and zepto without memorizing lists
Powers of ten trip up many students, and the SI prefix zepto (z) is one of the easiest to mix up with its neighbors. Good index notation flashcards pair each prefix with its exponent, so you learn that zepto means 10^-21 rather than a vague sense of 'very small'.
- Zepto is 10^-21, placed between atto (10^-18) and yocto (10^-24) in the SI list.
- When multiplying powers with the same base, add the exponents.
- When dividing, subtract the exponents, so 10^-3 divided by 10^-5 is 10^2.
- Ask yourself the prefix and the exponent for each card, not only one of them.
Built from your material
Upload PDFs, DOCX or PPTX files, plain notes, or photos of pages. Text recognition reads images, so handwritten-to-print pages still become cards.
Spaced repetition
Cards you miss come back sooner and cards you know fade into longer gaps, so review time goes to the facts you are still shaky on.
Quizzes and mind maps too
Turn the same notes into multiple choice, true/false or short answer quizzes with explanations, or a mind map of how the prefixes and index laws connect.
How it works
Upload your notes
Add the PDF, slides, document or photo from your class. No credit card is needed to start.
Review the cards
Check the flashcards that DeckOwl generates and edit any wording before you study.
Study on a schedule
Work through the deck in the browser each day and let spaced repetition set the next review for each card.
Build your deck around rules you apply, not just definitions. One card can ask you to multiply 10^3 by 10^4 and say 10^7, another can ask how many zeptograms are in a gram. Mixing these types makes recall work under exam conditions.
Review short sessions often rather than one long cram. Spaced repetition does the scheduling, and you can use a quiz from the same notes to check whether the index laws hold when the numbers change.
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Frequently asked questions
How do I remember where zepto sits in the SI prefixes?
Zepto (z) is 10^-21, which falls between atto (10^-18) and yocto (10^-24). Learning the prefixes in steps of three powers of ten makes the order easier to recall.
How many index notation flashcards should I make for one unit?
Aim for one card per rule or prefix you need, such as the index laws and the SI prefixes covered in class. A short deck you review daily will usually beat a long deck you skip.
Can DeckOwl make flashcards from my own class notes?
Yes. Upload a PDF, DOCX, PPTX, plain text file or a photo of your notes, and the flashcards are generated from that material.
Can I export these flashcards to Anki?
Anki and CSV export are part of the Plus plan, which costs $39/year or $7.99/month. The free plan lets you study in the browser, but exports are not included.
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