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Turn your lecture notes into an editable mind map

Upload a PDF, a Word file, slides, or typed notes and get a mind map you can rearrange, expand, and explore one branch at a time.

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Drop files here or browsePDF, DOCX, PPTX, text or photos of your notes · several files with Plus

Free · First set needs no signup · Creates mind maps in seconds

Why a mind map helps with study notes

Long lecture notes often hide how one idea connects to the next. Laying the material out as a branching diagram makes those links visible, which is why many students prefer mind map study notes to a flat page of bullets.

Shows how main ideas relate across a whole chapter
Lets you rearrange branches when your instructor reorders topics
Keeps each sub-point short enough to memorize
Pairs well with flashcards and quizzes built from the same notes

Example fractions and decimals mind map branches

Converting fractions to decimalsDivide the numerator by the denominator · Terminating decimals stop, like 1/4 = 0.25 · Repeating decimals keep going, like 1/3 = 0.333 · Simplify the fraction first when you can

Adding and subtracting decimalsLine up the decimal points · Pad with zeros so every number has the same number of places · Add or subtract as whole numbers · Place the decimal point in the answer under the others

Multiplying decimalsIgnore the decimal points and multiply as whole numbers · Count the decimal places in both factors · Place the decimal in the product so it has that total count · Estimate to check the size

Adding fractions with unlike denominatorsFind a common denominator · Convert each fraction to an equivalent one · Add the numerators and keep the denominator · Simplify the result

Decimal place valueTenths, hundredths, and thousandths follow the digits after the point · Each place to the right is ten times smaller · 0.45 reads as forty-five hundredths · Zeros after the last digit do not change the value

Generate the full set

Built from your own material

Upload PDFs, DOCX, PPTX, plain text, or photos of pages. Text in images is read with text recognition, so handwritten-free printed pages work too.

Editable branches

Rename a branch, move a subtopic under a different parent, or add your own points so the map matches how your course organizes the material.

Explore instead of scroll

Open any branch to see its sub-points up close. Follow the connections between main ideas before you test yourself on them.

How it works

Upload your notes

Add a PDF, DOCX, PPTX file, plain text, or a photo of a page. No credit card is needed to start.

Review the generated map

DeckOwl organizes the material into main branches and sub-points. Check that the structure matches your lecture.

Edit and study from it

Change anything that looks off, then explore the branches in the browser. Turn the same material into flashcards or a quiz when you are ready.

A useful map starts with one central topic, then splits into main branches and short sub-points. Keep each branch to a single idea so you can test yourself on it later without rereading the whole chapter.

DeckOwl builds the first draft from your own file, so the map reflects your course rather than a generic template. You can edit it until the structure is right and then explore it on any device with a browser.

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Frequently asked questions

How do I organize fractions and decimals in a mind map?

Start with fractions and decimals as the center, then use main branches for conversion, operations, and place value. Put one skill per sub-branch so each rule is easy to find when you review.

How many branches should a fractions and decimals mind map have?

Four to six main branches usually cover the core ideas without crowding the map. If a branch grows past four sub-points, split it into two smaller branches.

Is there a free plan?

Yes. The free plan includes 3 generations per month and lets you study in the browser. Exporting files is part of the paid Plus plan, which costs $39/year or $7.99/month.

Can I export my study notes after I make the map?

Plus includes PDF, DOCX, Anki, and CSV export, and it offers unlimited generations. Students with a school email get 40% off.

Generate free mind maps

Keep exploring the topic

Review the main ideas visually or practice recalling them.