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In the Spotlight
## Why Does Time Slow Down as You Approach the Speed of Light?

Why does time slow down as you approach the speed of light? Find out why in this article featuring Einstein, space travel, light clocks and more.

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### Every Prime Number Larger Than 3 Is 1 Away From a Multiple of 6: A Proof

Did you know that every prime number larger than 3 is only 1 away from a multiple of 6? In this quick maths guide we are going to prove this surprising fact.

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### How to Integrate By Parts: Calculus Help

Struggling with integration by parts? Not sure how it works? Find out how to integrate by parts and how to spot when you should integrate by parts in this quick guide.

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### Espresso Drinks Menu: A Quick Beginner's Guide

Have you ever been confused by the sheer amount of choice on a coffee shop menu? What is the difference between a flat white and an Americano with milk? Learn this and more in this quick guide.

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### How to Integrate 1/(e^x + e^-x) With Respect to x

Find out how to integrate 1/(e^x + e^-x) with respect to x in this quick how-to maths article.

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### How Do You Write 1999 in Roman Numerals?

Roman numerals are still used a surprising amount and most people are comfortable with the basics, but what about writing a large number like 1999 in numerals. Find out how we do this in this quick article.

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### 5 Shortest Serving British Prime Ministers

Liz Truss resigned as the Prime Minister of the UK after only 55 days in office, but is she the shortest serving of all? This article covers British Prime Ministers that served the shortest time.

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### How to Solve Direct Proportion Questions: Maths Help

A quick guide to solving direct proportion questions including finding missing values in tables and solving worded problems.

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### How to Make a Mathematical Paper Snowflake (Christmas Crafts)

Make a symmetrical Christmas snowflake using just paper, pencil, a pair of compasses, scissors and a straight edge with these quick instructions. Perfect for homemade Christmas decorations!

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### What Is the Collatz Conjecture? Unsolved Mathematical Problems

Find out all about the Collatz Conjecture, its origins and more in this quick maths article.

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### How to Do Long Multiplication Using Napier's Method

Find out how to do long multiplication using Napier's Method, also known as Lattice multiplication, in this quick maths article.

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### How to Answer the 'Impossible' Question on the Edexcel GCSE Maths Paper 2022

The final question on the 2022 Edexcel GCSE Mathematics paper has been branded as 'impossible' by many people. In this article we take a look at how to solve it.

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### How to Expand a Pair of Brackets, an Algebra Walkthrough

Learn how to expand a pair of brackets such as (x+1)(x+3) in this quick algebra maths lesson.

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### How to Find the Averages and Range From Grouped Data

Learn how to find the mean, median, mode and range from grouped data in a frequency table in this quick maths article.

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### How to Find the Average From a Frequency Table

Learn how to find the mean, median, mode and range from a frequency table in this quick maths article.

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### How to Find the Average of a Group of Numbers

Find out how to calculate the different averages and the range of a group of numbers in this quick maths article all about the mean, median, mode and range.

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### How Many Gifts Did I Get Over the Twelve Days of Christmas?

Have you ever wondered just how many gifts you would receive if your true love actually gave you all of the gifts from the Twelve Days of Christmas carol? Find out in this Christmas-themed maths article.

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### How to Use Pythagoras' Theorem to Find Missing Sides on Right-Angled Triangles

Find out how to use Pythagoras' theorem to find the length of missing sides on right-angles triangles in this quick maths article.

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### How to Find the Lowest Common Multiple and Highest Common Factor of Two Numbers

In this quick maths article we look at how to find the lowest common multiple and highest common factor of two numbers quickly and efficiently using prime factors.

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### How to Write a Number as a Product of Its Prime Factors

In this quick maths article, find out what prime factors are, how to find them using a factor tree and how any number can be written as a product of its prime factors.

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### What Do the Angles in a Polygon Add Up To?

In this quick maths article, find out what the angles in a polygon add up to, as well as the difference between interior and exterior angles.

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### What Are Triangular Numbers?

What are the triangular numbers? Find out how the sequence is defined and more interesting facts in this quick maths article.

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### Why Do We Split a Circle Into 360 Degrees? A Look at the Origins of 360

Ever wondered why circles have 360 degrees? Why not a simpler number such as 10 or 100? Find out some possible reasons in this quick maths article.

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### How to Factorise a Quadratic Algebraic Equation

How do you factorise quadratic equations quickly and easily? Find out in this quick algebra maths lesson.

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### How to Prove Pi Equals 2: A Mathematical Paradox

Do you know what pi equals? 3.141... right? Here's a curious geometric proof that pi equals 2.

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### How to Calculate a Percentage of an Amount Using a Decimal Multiplier

Learn how to calculate a percentage of an amount quickly and easily by using the decimal multiplier method.

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### What Is a Dudeney Number?

Find out about Dudeney numbers and how to find them in this quick maths article.

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### How to Solve a Quadratic Equation - Three Methods for Solving Quadratic Equations

Learn about three ways of solving quadratic equations in this quick maths article.

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### How to Find the Sum of a Geometric Sequence

How do we find the sum of a geomtric sequence? Discover how to quickly add up the first terms of a geometric sequence in this quick maths article.

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### What Are Hexadecimal Numbers?

What are hexadecimal numbers, what are they used for and how do we convert them into decimal numbers? Find out all of this and more in this quick math article.

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### How Many Socks Make a Pair? - A Mathematics Problem

You keep pulling socks out of a messy drawer, desperately trying to find a matching pair, but all you seem to get are odd socks. How many socks will you need to pull out of the drawer in order to be guaranteed a matching pair? Find out in this quick mathematics article.

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### A Quick Way to Solve 1000^2 − 999^2: The Difference of Two Squares

A look at how using the difference of two squares can speed up your mental arithmetic with large numbers.

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### Zeno's Paradox: Achilles and the Tortoise

Zeno's paradox tells the story of a race between the Greek hero Achilles and a tortoise but with a surprising twist. Find out more in this quick article.

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### How to Prove That the Square Root of 2 Is Irrational

It's common knowledge that the square root of two is an irrational number, but how can we prove it? Find out in this quick mathematics article.

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### Rationalizing the Denominator: Dealing With Surds/Radicals in Fractions

Struggling with surds and radicals in fractions? You're not alone. I'll explain it to you. Learn how to rationalize the denominator in this quick high school mathematics article.

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### Why Do We Rationalise the Denominator? Standard Notation While Using Surds/ Radicals

When learning about surds/radicals at school, we are always told to rationalise the denominator. But what does this mean and why do we do it? Find out why in this quick mathematics article.

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### The Prisoner's Dilemma: Using Game Theory to Achieve the Optimal Solution

Two criminals have been arrested for a crime, but the police don't have enough evidence to convict. They offer each criminal the chance to reduce their sentence by testifying against the other, but is this the best option? Find out in this quick math article about the prisoner's dilemma.

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### Decreasing the Circumference of Differently Sized Circles: A Counterintuitive Cricket Problem

The village of Smallville and the Intergalactic Gods have both had five metres of boundary rope stolen from their circular cricket pitches. They have vastly different sized pitches, so whose pitch will reduce in radius the most?

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### Being Careful When You Average an Average: A Basketball Problem

Alan has the best scoring average in the first half of the basketball season and the best scoring average for the second half of the season, but when everything is tallied together he finds that it is Brian who has the highest average over the season. Find out how in this quick math article.

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### Hilbert's Paradox of the Grand Hotel: Another Look at Infinity

This article will provide a look at Hilbert's Paradox of the Grand Hotel, also known as the 'Infinite Hotel Paradox'. Find out how to fit extra guests into the infinite hotel, even when every room is occupied!

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### How Large Is Infinity?

What do you think of when you hear the word infinity? Can there by different sizes of infinity? Find out in this quick math article.

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### Why Do We Have Leap Years?

Ever wondered why we have leap years? Why do we add an extra day to February every four years? Find out why and learn about the history of calendars and leap years in this article.

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### How to Add the Numbers 1-100 Quickly: Summing Arithmetic Sequences

If you were asked to add together all of the numbers from 1 to 100, what would you do? Would you go through each number, adding to your total as you went or is there a quicker way? Find out in this article.

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### N-bonacci Sequences - Taking Fibonacci Further

Most of us have heard of Fibonacci numbers and know a little about what they are, but what about N-bonacci numbers? In this article we will look at what they are and how they link to the Fibonacci sequence.

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### Mathematical Numbers - What Is 'e'?

The number 'e' is an extremely important number in mathematics and is used in various situations. But what is it? How do we calculate it? Find out in this article.

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### The Maths Behind Dating: Optimal Stopping Theory

When dating, should you choose to settle down with the first person you date or should you get a few dates under your belt before choosing? Find out what the maths says in this fun article about the optimal stopping theory.

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### Five More of History's Most Influential Women in STEM

A follow up to my original article on influential women in STEM, featuring another five incredible minds whose contribution to science, technology, engineering and maths changed our world forever.

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### Five of History's Most Influential Women in STEM

Histoy is full of many inspiring individuals who have worked in the fields of Science, Technology, Engineering and Mathematics (STEM). In this article we take a look at five of the most influential women from this list.

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### Why You Should Always Order the Large Pizza

Ever wondered if you should order one large pizza or two medium pizzas? Let some simple mathematics find the answer.

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### Why Does Time Slow Down as You Approach the Speed of Light?

Why does time slow down as you approach the speed of light? Find out why in this article featuring Einstein, space travel, light clocks and more.

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### Three of Isaac Newton's Most Important Contributions to the World

Isaac Newton is one of the most influential and famous mathematicians and scientists who has ever lived. In this article read about some of his most well-known and important contributions to the world.

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### The Maths Behind A4 Paper

A look at how A4 paper is defined and what makes it so interesting mathematically.

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### Interesting Facts About Pascal's Triangle

What is Pascal's Triangle and why is it so interesting? Find out here.

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### What Is an Erdős Number?

Find out about Paul Erdős, his life and the number that bears his name.

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### Three Interesting Fractals From Koch, Sierpinski and Cantor

A look at what fractals are and three of the most popular examples: the middle third Cantor Set, the Koch curve, and the Sierpinski triangle.

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### How Do Binary Numbers Work?

Learn how the binary system works, how to convert between binary and decimal and why the binary system is so important.

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### Four Interesting Types of Mathematical Numbers

There are many special types of numbers beyond the ones we commonly learn about, like square and prime numbers. The more rarely discussed types include perfect numbers, vampire numbers, Fibonacci numbers and narcissistic numbers.

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### The Handshake Problem: Creating a Mathematical Solution

If you have a room full of people, how many handshakes are required before everybody has shaken hands with everybody else exactly once?

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### 'The Andromeda Evolution' by Daniel H. Wilson: A Book Review

This article contains a book review of 'The Andromeda Evolution' by Daniel H.Wilson, a follow-up to the bestselling 'The Andromeda Strain' by Michael Crichton.

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### Post-Workout Cacao and Maca Smoothie Recipe

This article contains a recipe for my favourite post-workout smoothie containing cacao, maca and banana.

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### Speed Arithmetic - How to Multiply by 11 Without a Calculator

How to use a quick and easy method to multiply by 11 without using a calculator.

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### Speed Arithmetic - How to Multiply and Divide by 5 Without a Calculator

How to use a simple mental arithmetic method for quickly multiplying and dividing by 5 in your head.

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### How to Differentiate From First Principles

Differentiation is used to find the rate of change of a mathematical function as its input changes. Read on to find out how to differentiate from first principles.

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### How to Calculate Compound Percentage Changes

How to calculate compound interest increases and decreases using the multiplier method.

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### How Many Squares Are on a Chessboard? A Maths Problem

How many squares of all different sizes are there on a chessboard? Instead of counting them up, we can calculate the answer with a formula.

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### Bertrand's Paradox— A Problem in Probability Theory

A look at Bertrand's Paradox, where a seemingly simple probability question yields some very different results.

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### How Do Scale Factors Work for Area and Volume?

Wondering how to use scale factors when working with area and volume? Don't worry. Read on for a full explanation.

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### Pythagoras' Theorem - A Proof

How to prove Pythagoras' Theorem using geometry and some simple algebra.

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### How to Find Pi Using Regular Polygons

An article about how to find the value of Pi geometrically using regular polygons.

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### Maximizing the Area of a Rectangle

A farmer has 100 meters of fence and wants to make a rectangular enclosure with the largest possible area. What size should the sides of his rectangle be? How do you maximize the area of the rectangle?

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### The Birthday Paradox

How many people do you need to have in a room before you have a better than 50% chance of at least two people sharing a birthday? The answer is surprisingly low.

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### The Monty Hall Problem

The Monty Hall Problem is a popular example of how intuition can often lead you to make mistakes in probability. In this article, I will describe this interesting problem and the mathematics behind it.

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### Why Do Buses Come in Threes?

You sit around for ages waiting for a bus and then three come along at once. But why? Find out why buses come in threes in this quick maths article.

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### How to Calculate the Probability of Winning the National Lottery in the UK

An article all about the probability of winning the National Lottery jackpot or its smaller prizes.

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### Rice on a Chessboard - Exponential Numbers

A story about the surprising power of exponential numbers.

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### How to Write Fractions in Microsoft Word

For basic fractions, go to the 'Insert' tab and click 'Symbol'. By scrolling down, you will be able to find several simple fractions ready for you to insert.

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### How to Hide Error Values in Microsoft Excel

A tutorial on how to hide error values such as N/A in Microsoft Excel.

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### How to Use the VLookup Function in Microsoft Excel

An instructional article on how to use the VLookup Function in Microsoft Excel

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### How to Change a Microsoft PowerPoint Slideshow Into a Video

Step-by-step instructions for converting a Microsoft PowerPoint slideshow into video, including adding sound.

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### A Review of "Mr. Mercedes" by Stephen King

Love Stephen King? Wondering which novel of his you should read next? Read on for my full review of "Mr. Mercedes" by Stephen King, published in 2014. This might just be your next page-turner.

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### Book Review: Kerrigan in Copenhagen by Thomas E. Kennedy

Kerrigan in Copenhagen by Thomas E. Kennedy is a guide book to Copenhagen, especially it's drinking establishments, disguised as a novel, following Kerrigan as he meanders from bar to bar, discussing literature, life and jazz.

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### Teaching Speed-Time Graphs

An outstanding lesson plan for introducing speed-time graphs to your students.

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### Katherine Parr - The One Who Survived.

Divorced, beheaded, died. Divorced, beheaded, survived. Read about the one who survived: Katherine Parr, the final wife of Henry VIII.

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### The Real Ghostbusters

The Real Ghostbusters - A classic cartoon from the 80s.

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### The Very Best of Modern Talking - An Album Review

The Very Best of Modern Talking, greatest hits album - A review

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### My Favourite Tower Defence Games

A short article about my favourite web-based tower defence games.

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### How to Cure a Blocked/Stuffy Nose

As a teacher, I regularly catch colds and other bugs. Generally, they're not particularly bad and I can work through them, but sometimes I get hit by a heavy cold and end up with an extremely runny nose. After a day or two this then turns into a...

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### Favourite Cartoons of My Childhood

A list of classic cartoons from my childhood (late 80s, early 90s).

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### My Favourite Mathematics Authors

Popularisers of maths, such as Iain Stewart and Marcus de Sautoy, help to bring the magic and wonder of mathematics to everybody, regardless of their level of maths education.

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### My Favourite Scandinavian Pop Groups

There are a surprisingly large number of hugely popular music acts from Scandinavia. Read on to find out more.

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### My Favourite Console - Commodore Amiga 600

All about my very first console, The Commodore Amiga 600.

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### My Favourite A-Team Memorabilia

A Hubpage all about fantastic A-Team memorabilia. Relive those 80's moments.

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### Tomato and Hotdog Pasta Recipe

This is my favourite quick pasta recipe for when I'm home alone. I'm not much of a cook and I created this at university, so it's simple and easy to do and the ingredients are cheap and commonly found in most kitchens. I often make this if I'm...

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### The Nightmare Before Christmas - Family Halloween Movie

The Nightmare Before Christmas - A review of the perfect family Halloween movie.

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### Shakin' Stevens Greatest Hits

Shakin' Stevens Greatest Hits - An album review

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### Rules of Honour - Matt Hilton

Rules of Honour by Matt Hilton - A review.

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### Flash Gordon - Film review

Film review - Flash Gordon, a cult classic movie from the 80's.

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### My Family and Other Animals - Gerald Durrell

My Family and Other Animals by Gerald Durrell - A book review.

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### Teaching Circumference and Diameter of a Circle

Some lesson ideas for teaching the circumference and diameter of a circle. An excellent introduction to pi.

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### The Traveling Wilburys -Vol. 1

The Traveling Wilburys - Vol. 1, an album review.

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### Hunky Dory - David Bowie

Hunky Dory by David Bowie - A Review.

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### Doctor Who - The Vault

Doctor Who - The Vault, a book review.

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### Classic 80s Tv - the A-Team

The A-Team; my favourite tv program of all time. Relive some classic 80's moments here.

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### Amadeus - A Film Review

Amadeus - A film review.

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### 'Actually', Pet Shop Boys

'Actually' by the Pet Shop Boys - A review

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### The Night Before Christmas Book Gift

An article about the classic book 'The Night Before Christmas'.

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### The Mentalist on DVD

The Mentalist - One of my favourite detective shows, available on DVD.

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### Things to Do in Bruges, Belgium

Top places to visit in Bruges, Belgium. A list of tourist attractions for visitors to this beautiful Belgian city.

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### Jurassic Park Book Review

Jurassic Park by Michael Crichton - A book review.

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### Stephen King Film Adaptations

A list of movies inspired by Stephen King novels.

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### My Top Five Favourite Stephen King Novels

A list of my favourite five Stephen King Novels

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### A Beginner's Guide to Reality - Book Review

A Beginner's Guide to Reality by Jim Baggot - A review.

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### Using the HTML Element on Weebly

So you've got your Weebly website up and running using the basic elements such as text and image. Now you're wondering how to use the HTML element. There are many things you can do with this useful element and in this lens I will show some of the...

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### Learning the Presidents of the United States

An article all about my attempt to memorise all of the Presidents of the United States, including some interesting trivia along the way.

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### Halloween Films for the Whole Family

Kids love Halloween. It's a great excuse to dress up in a fancy costume and then obviously there's the chocolate and sweets. There are also some great Halloween films out there to get the family in the mood; but what's a good choice for the family?...

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### The Best Tv Cars and Vehicles of the 80s

A list of some of my favourite cars and other vehicles from classic 80's tv series.

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### Cold Relieving Lemon, Garlic and Ginger Drink

How to make the perfect cold relieving drink using lemon, garlic, ginger and honey.

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### Ideas for Maths Lesson Starters

Having difficulties finding interesting starters for your maths lessons? Then check out the ideas in this article that can help get your students' brains ready for maths with these lesson starters.

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### My Favourite Modern Thriller Writers

A list of my favourite modern thriller writers including Lee Child and Matt Hilton.

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### Great Ideas for Hands-On Maths Lessons

A collection of ideas for teaching maths in a fun, hands-on way.

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### Shrove Tuesday or Pancake Day

A quick article all about Shrove Tuesday/Pancake day, its history and how to make your own pancakes

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### My Favourite Things to Do in Salzburg, Austria

A list of great places to visit in Salzburg, Austria; home of Wolfgang Amadeus Mozart.

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### Fried Egg in a Basket Recipe

How to make fried egg in a basket, a delicious snack using eggs and bread.

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### Fishfinger (Fishstick) and Cheese Toastie Sandwich Recipe

How to make a fishfinger and cheese toastie sandwich.

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### Chocolate Biscuit Loaf Recipe

How to make delicious chocolate biscuit loaf, ideal for parties or snacking.

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