The embedded code looks like this.

`<img src="http://chart.apis.google.com/chart?chxt=y&chbh=a&chs=300x225&cht=bvg&chco=A2C180,3D7930&chd=t:10,50,60,80,40,60,30|50,60,100,40,20,40,30&chtt=Vertical+bar+chart" width="300" height="225" alt="Vertical bar chart" />`

which produces this.

Now you need to login to your Mahara eportfolio and create a new view. Add a text box and click ‘html’ in a editor tool. Paste the code which you copied and save.

]]>MathJax is an open source JavaScript display engine for mathematics that works in all modern browsers. You can use TeX, LaTeX, MathML and other formats.

I am going to show you how to add MathJax to Mahara.

First download MathJax from here. As of today, version is MathJax-v1.0.1a.zip.

Download MathJax-Font-Update.zip as well. You may not need this in future. This fonts are for Firefox 3.6.13.

You need to unzip it and transfer following directories to mahara/js directory.

– config

– extensions

– fonts

– jax

– MathJax.js

Open mahara/lib/web.php and around line 219 add $javascript_array[] = $jsroot . ‘MathJax.js’; as following.

else {

$javascript_array[] = $jsroot . 'MochiKit/Packed.js';

$javascript_array[] = $jsroot . 'MathJax.js';

}

That’s it.

In Mahara, create a view and drag a textbox and enter the following.

`When \(a \ne 0\), there are two solutions to \(ax^2 + bx + c = 0\) and they are`

$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$

You should be able to see mathematical notation!

MathJax is easy to install. Only drawback I can think of is that MathJax does not use flash nor graphical input, so you have to learn these formats to input. I am not so familiar with these notations and I have to learn them.

]]>This eportfolio can be used in different ways in different levels.

1. Students can create own learning log.

2. For IB Science, Group 4 project can be done.

3. Can be used as class notebook?

If you have any more ideas, please add them in the comment.

]]>