**This Diigo list** has several useful dictionaries and other useful reference material for Mathematics students. **See Jenny Eather’s dictionary for example **and note the section on **charts**. Also very useful is this **glossary for teachers**. It’s really good for students too as it defines vocabulary used in Mathematics from Key Stage 1 to Key Stage 4 (Ages 6-16). For the terminology used in question papers see this document: **maths exam terminology (**I have seen this document around the web, I believe the original is from AQA).

Try the excellent credit card size information sheet full of **mathematical formulae from Loughborough University**. This is also available as a free app for your mobile phone.

For older students perhaps try **Wolfram MathWorld** or **The Mathematical Atlas**. Note that that is possible to obtain a definition from WolframAlpha – for example try **complex number **for various examples with complex numbers and note that you can choose to look at the **mathematical definition **also.

Look up the definition of domain on WolframAlpha

Or perhaps try the **Mathisfun dictionary.**

Note that **Diigo** is a social bookmarking tool which allows you to store your favourite websites online and share them with others. This means you can access your favourites from any computer.

**Learn more about Diigo. **If you want a great way to store links / notes / ideas /files then have a look at **Evernote**.

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I’m glad it’s helpful Clara. I know lots of students and teachers like Jenny Eather’s dictionary for example.

Very useful for students Colleen. Please visit my blog http://mathematicsbhilai.blogspot.com/ . I am also using it for students.

Hi Sanjay – it’s good to see teachers writing for their students!