This is an older version of the TAO User Guide, click here for the documentation of the most recent release, TAO 3.3.

# Math Expressions

Math Expressions - i.e. mathematical operators - can be employed in interactions by using the Math Editor. The

Math Editoris a WYSIWYG editor based on MathQuill (http://mathquill.com/), which allows you to use mathematical symbols to create LaTeX expressions containing mathematical operators. It is found in the Custom Interactions section.

To access the Math Editor follow the steps below.

**1.** Once you have created a new Item, click on the Custom Interactions library below *Graphic Interactions* on the left, and drag the *Math Entry* icon onto the blank Item and drop it onto the canvas.

The MathQuill editor can also be accessed from any block by selecting *Insert Math Expression* (the *pi* symbol) and then clicking on the *WYSIWYG editor*.

A list of mathematical symbols will appear, with an empty text field below.

**2.** Click on the mathematical symbols you wish to use.

These will appear in the text field. They can then be used in the writing of mathematical formulae, such as questions on geometry.

*Note: The Math Editor only provides the possibility of drawing mathematical symbols, but does not carry out any calculation.*