Study tools

The Notebook

One page of notes kept in your account, beside whatever you read, with the passages you save from lessons under Highlights & Quotes.

Flashcards

Decks of question-and-answer cards: build one from a module's key terms in a click, or write your own, then study and share it.

The Whiteboard

Boards for drawing by hand, kept in your account, with freehand and straight lines, an eraser, undo and a PNG export.

The Calculator

Scientific, graphing, matrix and programmer modes in one panel, with a history of your last 25 answers in this browser.

The Converter

Currency at the day's rate between about 160 currencies, plus measurements and data storage, converted as you type.

Moving and closing tool panels

Open any study tool from Quick tools or Ctrl+Alt and a letter, drag it anywhere, and close it with Ctrl+Alt+Backspace or Esc.