1. Introduction Paragraph Format
2. Introduction To Sociology
3. Introduction Paragraph Examples
4. Introduction Definition
5. Introduction Synonym
6. Introduction Definition

Algebra is great fun - you get to solve puzzles!

A Puzzle

Sample sentence extracts (the complete Introduction is 17 pages long) Give some background (p.1 of 17) 1.1 Fluoride in the environment. Molecular fluorine (F2) is the most electronegative of the elements and therefore is highly reactive. Due to its high reactivity it is never found in its elemental form in nature. The purpose of the introduction is to give your reader a clear idea of what your essay will cover. It should provide some background information on the specific problem or issue you are addressing, and should clearly outline your answer.

What is the missing number?

OK, the answer is 6, right? Because 6 − 2 = 4. Easy stuff.

Well, in Algebra we don't use blank boxes, we use a letter (usually an x or y, but any letter is fine). So we write:

It is really that simple. The letter (in this case an x) just means 'we don't know this yet', and is often called the unknown or the variable.

And when we solve it we write:

Why Use a Letter?

So x is simply better than having an empty box. We aren't trying to make words with it!

And it doesn't have to be x, it could be y or w .. or any letter or symbol we like.

How to Solve

Algebra is just like a puzzle where we start with something like 'x − 2 = 4' and we want to end up with something like 'x = 6'.

But instead of saying 'obviously x=6', use this neat step-by-step approach:

• Work out what to remove to get 'x = ..'
• Remove it by doing the opposite (adding is the opposite of subtracting)
• Do that to both sides

Here is an example:

To remove it, do
the opposite, in
this case add 2

Which is .. How to search for words in a text mac.

Why did we add 2 to both sides?

Introduction Paragraph Format

To 'keep the balance'..

Just remember this:

See this in action at the Algebra Balance Animation.

Another Puzzle

What we want is an answer like 'x = ..',
but the +5 is in the way of that!
We can cancel out the +5 with a −5 (because 5−5=0)

Have a Try Yourself

Now practice on this Simple Algebra Worksheet and then check your answers. Try to use the steps we have shown you here, rather than just guessing!

Try the questions below, then read Introduction to Algebra - Multiplication

What is CSS?

• CSS stands for Cascading Style Sheets
• CSS describes how HTML elements are to be displayed on screen, paper, or in other media
• CSS saves a lot of work. It can control the layout of multiple web pages all at once
• External stylesheets are stored in CSS files

CSS Demo - One HTML Page - Multiple Styles!

Here we will show one HTML page displayed with four different stylesheets. Click on the 'Stylesheet 1', 'Stylesheet 2', 'Stylesheet 3', 'Stylesheet 4' links below to see the different styles:

Why Use CSS?

CSS is used to define styles for your web pages, including the design, layout and variations in display for different devices and screen sizes.

CSS Example

CSS Solved a Big Problem

HTML was NEVER intended to contain tags for formatting a web page!

HTML was created to describe the content of a web page, like:

This is a heading

This is a paragraph.

When tags like , and color attributes were added to the HTML 3.2 specification, it started a nightmare for web developers. Development of large websites, where fonts and color information were added to every single page, became a long and expensive process.

To solve this problem, the World Wide Web Consortium (W3C) created CSS.

CSS removed the style formatting from the HTML page!

If you don't know what HTML is, we suggest that you read our HTML Tutorial.

CSS Saves a Lot of Work!

Introduction To Sociology

The style definitions are normally saved in external .css files.

Introduction Paragraph Examples

With an external stylesheet file, you can change the look of an entire website by changing just one file! Gopro for maceverinsight.

Introduction Definition

What we want is an answer like 'x = ..',
but the +5 is in the way of that!
We can cancel out the +5 with a −5 (because 5−5=0)

Have a Try Yourself

Now practice on this Simple Algebra Worksheet and then check your answers. Try to use the steps we have shown you here, rather than just guessing!

Try the questions below, then read Introduction to Algebra - Multiplication

What is CSS?

• CSS stands for Cascading Style Sheets
• CSS describes how HTML elements are to be displayed on screen, paper, or in other media
• CSS saves a lot of work. It can control the layout of multiple web pages all at once
• External stylesheets are stored in CSS files

CSS Demo - One HTML Page - Multiple Styles!

Here we will show one HTML page displayed with four different stylesheets. Click on the 'Stylesheet 1', 'Stylesheet 2', 'Stylesheet 3', 'Stylesheet 4' links below to see the different styles:

Why Use CSS?

CSS is used to define styles for your web pages, including the design, layout and variations in display for different devices and screen sizes.

CSS Example

CSS Solved a Big Problem

HTML was NEVER intended to contain tags for formatting a web page!

HTML was created to describe the content of a web page, like:

This is a heading

This is a paragraph.

When tags like , and color attributes were added to the HTML 3.2 specification, it started a nightmare for web developers. Development of large websites, where fonts and color information were added to every single page, became a long and expensive process.

To solve this problem, the World Wide Web Consortium (W3C) created CSS.

CSS removed the style formatting from the HTML page!

If you don't know what HTML is, we suggest that you read our HTML Tutorial.

CSS Saves a Lot of Work!

Introduction To Sociology

The style definitions are normally saved in external .css files.

Introduction Paragraph Examples

With an external stylesheet file, you can change the look of an entire website by changing just one file! Gopro for maceverinsight.

Introduction Definition

Introduction Synonym

Introduction Definition