While the Internet can be a great source of information, it also contains a lot of rubbish. The challenge in making good use of it, is to find the useful stuff and avoid wasting time or being misinformed by the rubbish. The following links are ones that I think might be of some use to second level maths students. Please feel free to e-mail your comments as to whether you found them beneficial or not. If you e-mail me other links of items you think suitable for this section I will consider adding them to this page.

**But be warned. **Spending hours upon hours at a time looking at video tutorials will do you no good. It will just waste a lot of your valuable time. To get benefit from it just look at one or two at a time to gain an appreciation for a particular topic, then think about it and try and work out a few examples for yourself to be sure you understand it properly.

**Mathematics online tutorials for Junior Certificate**

– Pre-algebra: Click here for a tutorial of the **order of operations part 1**

– Pre-algebra: Click here for a tutorial about **adding/subtracting negative numbers**

– Pre-algebra: Click here for a tutorial about **multiplying/dividing negative numbers**

– Pre-algebra: Click here for a tutorial about **adding/subtracting fractions**

– Pre-algebra: Click here for a tutorial about **multiplying fractions**

– Pre-algebra: Click here for a tutorial about **dividing fractions**

– Pre-algebra: Click here for a tutorial about **negative exponent functions**

– Pre-algebra: Click here for a tutorial about** exponent rules part 1**

– Pre-algebra: Click here for a tutorial about** exponent rules part 2**

– Pre-algebra: Click here for a tutorial about** simplifying radicals**

**Mathematics online tutorials for Leaving Certificate**

– Trigonometry: Click here for **basics in trigonometry 1*** and here for **basics in trigonometry 2***

– Trigonometry: Click here for proof of the **law of cosines (cosine rule)**

– Trigonometry: Click here for proof of the **law of sines (sine rule)
** – Trigonometry: Click here for an explaination of the

**Unit Circle***

– Trigonometry: Click here for a nice worked example of

**trigonomtric identities***

– Trigonometry: Click here for a tutorial on

**radians & degrees***

– Trigonometry: Click here for examples of

**using trigonometric functions 1***

– Trigonometry: Click here for for a tutorial on

**using trigonometric functions 2***

– Trigonometry: Click here for a worked example of using trigonometry to

**solve navigation problems 1****

– Trigonometry: Click here for a worked example of using trigonometry to

**solve navigation problems 2****

– Trigonometry: Click here for

**graphing trigonometric functions****

– Vectors: Click here for worked example of **calculating the modulus** and **calculating vector AB
**

– Co-ordinate Geometry of the line: Click here for finding the equation of a line

– Pre-algebra: Click here for an **introduction to logarithms**

– Algebra: Click here to see **linear equations part 1**

– Algebra: Click here to see **linear equations part 2**

– Algebra: Click here to see **linear equations part 3**

– Algebra: Click here to see **linear equations part 4**

– Algebra: Click here to see an explaination of the **slope part 1**

– Algebra: Click here to see an explaination of the **slope part 2**

– Algebra: Click here to see how to **graph a line part 1**

–Inequalities: Click here to see how to **solve algebraic inequalities**