# How do I use the math Equation Editor in the Rich Content Editor?

Canvas has an integrated tool for math and science formulas based on LaTeX, the industry standard for academic publication. The LaTeX Equation Editor is built into the Rich Content Editor. Several features in Canvas support the Rich Content Editor, including Announcements, Assignments, Discussions, Pages, Quizzes, and Syllabus.

You can use the Equation Editor for introductory math courses or for more advanced mathematics for higher-level math courses.

To enter mathematical or chemical expressions, you can use the Equation Editor toolbar buttons, or you can enter LaTeX code directly. For more help using LaTeX, view the following resource documents:

- Canvas Equation Editor Tips: Math Expressions Using LaTeX
- Canvas Equation Editor Tips: Chemistry Using LaTeX

**Notes: **

- To have characters #, $, &, ^, and _ appear in the Rich Content Editor when your equation is inserted, you must type a backslash (\) before the character. The ~ character can be inserted by typing \~~.
- Equation images are stored as absolute (full website) URLs which may affect course copies.

## Open Rich Content Editor

Open the Rich Content Editor when creating or editing an announcement, assignment, discussion, page, quiz, or syllabus.

**Note:** The Rich Content Editor supports keyboard shortcuts. To view the Keyboard Shortcuts menu, click the Keyboard icon or press **ALT+F8** (PC keyboard) or **Option+F8** (Mac keyboard).

## Open Equation Editor

To open the Math Editor, click the **Insert Math** **Equation** icon [1].

You can also open the Math Editor from the Rich Content Editor menubar. Click the **Insert** link [2], then select the **Equation** option [3].

**Note: **To view the Insert Math Equation icon, you may need to click the **Options** icon [4].

## View Equation Editor

The Equation Editor provides a toolbar for inserting various operators and symbols [1].

You can enter expressions in the equation field [2].

You can view and edit or hide the LaTeX code behind an expression by clicking the **Directly Edit LaTeX** toggle [3].

## View Toolbar Tabs

By default, the toolbar displays the **Basic** tab. To access other operators and symbols, click any of the following tabs: **Greek**, **Operators**, **Relationships**, **Arrows**, **Delimiters**, and **Misc**.

## Create Math Expression

To enter expressions, press keys on your keyboard, click the toolbar buttons, or enter LaTeX code in the equation field.

**Note: **To position the cursor in the correct spot as you enter an expression, you can press the arrow keys on your keyboard.

### Fill Math Toolbar Placeholders

When you click a Math Editor toolbar button [1], placeholders may display [2].

To fill in a placeholder, click it and enter a value from your keyboard or click a toolbar button. The value overwrites the placeholder [3].

### Enter LaTeX Code

If you know the LaTeX code of an expression you want to enter, paste it or type it in the equation field. The code is automatically rendered. For example, if you enter \left(-\infty,4\right], the rendered code automatically displays.

#### View LaTeX Code

To view or edit the LaTeX code, click the **Directly Edit LaTeX** toggle on [1].

The LaTeX code displays in the equation field [2].

Edit the code as needed. As you edit, the LaTeX rendering updates automatically [3].

**Note: **You can learn more about using LaTeX code for advanced math or for chemistry and scientific notation.

## Insert Expression

To add your mathematical expression to the Rich Content Editor, click the **Done** button.

## Format

You can add text around your math expressions and insert additional math equations. Format them using the options in the Rich Content Editor.

## Save Changes

To save any changes made in the Rich Content Editor, click the **Save** button.

**Notes:**

- The assignment, discussion, pages, and quizzes details pages display a
**Save & Publish**button. - The Syllabus page displays an
**Update Syllabus**button. - Discussion and announcement replies display a
**Post Reply**or**Reply**button.

## Edit or Resize Equation

To resize or edit a math expression, click it to view the edit controls. Then, to resize the expression, hover the cursor over a resize handle [1], click, and drag to a new size.

To open the Equation Editor and make edits, click the **Edit Equation** link [2].