# The Equation Editor

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To facilitate your online work in math and science courses, Desire2Learn includes an Equation Editor.

The Equation Editor allows you to include mathematical equations within your discussion posts and Email correspondence.## To Access the Equation Editor

- Within a Discussion topic, select
**Start New Thread**at the top of your screen to begin a new post, or select a previous post and then select**Reply**. The HTML Editor will open. - Select
**Show All Components**. You will see a variety of formatting, structure and content tools here. - Select the arrow to the right of the
**Equation**icon, and choose**Graphical equation**,**MathML equation**, or**LaTeX equation**icon, depending on which type of equation you want to insert.

## Using the Equation Editor

**Follow these steps to write an equation:**

- Enter your expressions and/or equations in the editing box.
*Note:**Take advantage of the different templates provided on the different tabs to build the equations and insert fractions, exponents, and other mathematical elements.* - Once you are done writing your equation or expression, select
**Insert**.

You will only see a yellow box from this view; however, the entire equation or expression will be visible in the discussion once it is posted.

## To Edit an Equation You have Written

- Select the equation you wish to edit.
- Choose one of the
**Insert Equation**icons. The Equation Editor will load in a new window. - Make the needed changes and select
**Insert.** - Select
**Save**to update your changes on your post.

Now that we've covered some of the basics of navigating and working in Desire2Learn, let's review some of the key Course Content tools.