# Maths Videos

## Transum Videos

• The videos in the first section of this page are those made by Transum. Most of them are the videos that are found in the 'help' tab of online exercises so aren't listed in the Topics pages.

These videos are best viewed in full screen mode.

A reminder of how to add two or more numbers using the column method.

• ### Angles in a Triangle

A reminder of how to use the fact that the angles in a triangle sum to 180 degrees to find the size of unmarked angles in triangular diagrams.

• ### Arithmetic Sequences

A reminder of how to find the next term, the nth term and the sum of terms of an arithmetic or linear sequence.

• ### Averages

Revise how to calculate the mean, median, mode and range from lists and frequency tables.

• ### BIDMAS

A reminder of the order of operations often referred to as BIDMAS, BODMAS or PEMDAS.

• ### Bearings

Find out about bearings and practise estimating, measuring and calculating them.

• ### Binomial Theorem

You may have learnt about the binomial expansion in class some time ago so here's a reminder to bring you up to speed.

• ### Box Plots

Box plots, sometimes called box and whisker diagrams, are a useful way of visualising data.

• ### Brackets Levels 1 and 2

Learn how to remove brackets from simple algebraic expressions.

• ### Brackets Levels 3 to 5

Learn how to multiply the terms inside a pair of brackets by the term outside.

• ### Brackets Levels 6 to 8

Expand a pair of brackets using the clown's face method.

• ### Brackets Levels 9 and 10

The final video showing how algebraic expressions containing brackets can be simplified.

• ### Calculator Dice

If you have no dice don't despair because most scientific calculators have a random number generating facility as can be seen in this short video.

• ### Changing The Subject

Otherwise known as rearranging the formula, this video shows how to change the subject of an equation.

• ### Circles - Finding area and circumference

The circumference and area of a circle can be found if the radius or diameter are known.

• ### Collecting Like Terms

If you have forgotten what collecting like terms means watch this video for a quick refresher.

• ### Common Trig Ratios

You may not realise that it is possible to find sin60° or tan45° without a calculator.

• ### Congruent Triangles

Learn the conditions for two triangles to be congruent and then use this information to solve problems.

• ### Coordinates

For those who would like a reminder about coordinates here it is.

• ### Decimal Multiplication and Division

See the most efficient pencil-and-paper methods for multiplying and dividing decimal numbers.

• ### Decimal Plus

Learn the written methods for adding and subtracting decimal numbers.

• ### Differentiation

A reminder of how to differentiate different types of functions and how to find the equations of tangents and normals.

• ### Division

A reminder of how to divide one number into another using short or long division.

• ### Equations with Fractions

If you have learnt how to solve linear equations the next step is to solve equations with fractions.

• ### Factorising

A reminder of how to factorise an algebraic expression.

• ### Folded Pentagon

Did you know that you can fold an A4 sheet of paper into a regular pentagon? This short video shows how it is done.

• ### Fractions

So many people can't remember how to add, subtract, multiply and divide fractions so here is a reminder.

• ### Improper Fractions Level 1

Converting improper fractions to mixed numbers.

• ### Improper Fractions Level 2

Find out how to change a mixed number into an improper fraction.

• ### Improper Fractions Level 3

Learn how to convert an improper fraction to a mixed number in its lowest terms.

• ### Indices

Indices, exponents and powers can all be used as a short way to describe repeated multiplication.

• ### Interest

Learn about simple interest, compound interest, appreciation and depreciation.

• ### Multiplication

A reminder of how to multiply two numbers using the column method or long multiplication.

• ### Negative Numbers

Revise how to add, subtract, multiply and divide negative numbers.

• ### Percentage Change

When you have mastered working out percentages you can then apply that skill to calculating percentage increase, decrease and reverse percentages.

It is really useful to have some mental strategies for working out percentages in your head.

• ### Perpendicular Bisector

A step-by-step guide showing how to construct the perpendicular bisector of a line segment.

• ### Polygon Angles

A concise reminder about angles, both interior and exterior, in regular and irregular polygons.

• ### Prime Numbers

A reminder of what prime numbers and composite numbers are.

• ### Probability

A reminder of how to work out basic probability leading to simple combined events and expected values.

• ### Pythagoras' Theorem

The square of the hypotenuse of a right-angled triangle is equal to the sum of the squares of the other two sides.

• ### Quadratic Equations

Learn the common methods of solving quadratic equations by factorising and by using the quadratic formula.

• ### Ratio

Learn to work with ratios including dividing a quantity in a given ratio.

• ### Rounding

A reminder of how to round numbers to significant figures, decimal places and to the nearest power of ten.

• ### Ruler and Compass Constructions

A demonstration of standard ruler and compass constructions.

• ### Scale Factors

The scale factor, area factor and volume factor of similar shapes are quite different.

• ### Simultaneous Equations

Learn to solve simultaneous equations from the very basic to those containing quadratics.

• ### Straight Line Graphs

After drawing a straight line graph learn about its equation in the form y = mx + c.

• ### Substitution

Lots of examples of substituting values into algebraic expressions.

• ### Subtraction

A reminder of how to subtract one number from another using the column method.

• ### Telling The Time - Part 1

Learn how to tell the time from an analogue clock then do the online exercise called Telling The Time Level 1.

• ### Telling The Time - Part 2

Learn how to tell the time from an analogue clock then do the online exercise called Telling The Time Level 2.

• ### Telling The Time - Part 3

Read the time from an analogue clock and write it in the 24-hour format.

• ### Telling The Time - Part 4

A few clues and a little bit of help with Telling The Time Level 4.

• ### Trigonometry

The basic trigonometric ratios are sine, cosine and tangent and are used to find the lengths of sides and the size of angles in right-angled triangles.

• ### Venn Paint

Here is a demonstration of how to illustrate union, intersection and complement of sets as they appear in Venn diagrams.

• There are 56 Transum videos so far but I would really like the collection to grow. Do you have a good idea for a mathematical video? I am always happy to receive suggestions though, of course, can't make any promises!

## Other Mathematics videos chosen from YouTube.

• Here is a collection of hand-picked mathematical videos freely available on YouTube. If you are looking for a particular topic you may like to begin on the topics page where you can also find Starters, visual aids and interactive resources.
Please let me know if you find any interesting videos we should include in this list.
• ### A Brief History of Pi

A video from Simon Clark presenting a deep but accessible account of the history of pi. [Time: 16:46]

• ### A History of the Calendar

A fast paced animation explaining the development of the modern calendar. [Time: 3:55]

• ### A Mathematical Fable

It's not just the squares on the sides of right angles triangles that add up! [Time: 8:56]

• ### Angle Properties Song

A song about the angles made with parallel lines. [Time: 2:53]

• ### Angles in Depth

Craig Barton and Jo Morgan help you and your class understand angles through the means of kung fu. [Time 1:12:49]

• ### Area and Perimeter

Area and perimeter of composite shapes video for GCSE Maths. [Time: 10:15]

• ### BIDMAS Misconception

This Maths problem went viral on Twitter and there has been debate about the answer. Presh explains why one interpretation is considered correct. [Time: 3:32]

• ### Binary and The Tower of Hanoi

A video showing how binary counting can solve the Tower of Hanoi puzzle. [Time: 13:58]

• ### Bodmas Song

A novel way of introducing the mathematical calculation convention, BODMAS [Time: 1:27]

• ### Bridge Logic Riddle

Can you use Maths to get you and your friends over the bridge before the zombies arrive? A logic puzzle presented as a cartoon. [Time: 3:49]

• ### Can't Add Up!

This simple Maths problem often baffles even really smart people. Can you solve it? [Time: 0:55]

• ### Circle Drawing Champion

A teacher draws a perfect freehand circle of diameter one metre in less than a second. [Time: 1:18]

• ### Circle Facts Song

A free trial lesson from Math Upgrade dot com. [Time: 1:51]

• ### Circumference

How does the circumference of a glass compare to the height of the glass? You'll be surprised when you find out. [Time: 1:03]

• ### Combinations and Permutations

Learn how to tell the difference between permutations and combinations and use the formulae to answer questions. [Time: 7:38]

• ### Construct a congruent triangle

Construction (with compass and straight edge) of a triangle congruent to a given triangle. [Time: 1:33]

• ### Coordinate Plane and Plotting Points

A video explaining the vocabulary and showing how to plot points in all four quadrants.

• ### Counting Crowds

Find out how statisticians use density samples to estimate their statistics. [Time: 2:29]

• ### Creativity in Mathematics

Professor Marcus Du Sautoy believes that the worlds of Mathematics and the Arts are much closer than we’re led to believe [Time: 5:03]

• ### Cube Root

This video from Corbettmaths explains what the term cube root means and shows how to cube root a number. [Time: 3:21]

• ### Cube Roots in 2 seconds!

Mentally calculate the cube root of any perfect cube of a number between 1 and 1000. [Time: 8:39]

• ### Different types of Triangle

Euclid and his friends explain how many different kinds of triangle there are. [Time 3:47]

• ### Direct and Inverse Proportion

Examples showing how to solve direct and inverse proportion questions in the form of a song! [Time 3:33]

• ### Domain and Range

Domain and range of a function given a formula from Khan Academy. [Time: 8:06]

• ### Enlargement by a scale factor

A Maths teacher goes through the idea of enlarging a shape from a centre of enlargement. [Time: 10:39]

• ### Enlargements

How to enlarge a shape by a positive scale factor and a centre of enlargement. Includes a scale factor less than 1 and a centre of enlargement inside the shape. [Time: 2:27]

• ### Estimate Enormous Numbers

Learn how to use the powers of 10 to make amazingly fast estimations of big numbers with this animated explanation. [Time: 4:14]

• ### Facts You Should Know About Pi

Mathematician Presh Talwalkar explains five facts you should know about pi. [Time: 5:53]

• ### Finding Prime Factors

A straight forward explanation from SLEP [Time: 2:50]

• ### Folded Pentagon

Did you know that you can fold an A4 sheet of paper into a regular pentagon? This short video shows how it is done. [Time: 2:13]

• ### Formulae for GCSE

These are the formulae candidates need to know for the GCSE(9-1) Maths exams. [Time 58:11]

• ### Fraction Basics Song

A free trial lesson from Math Upgrade dot com. [Time: 1:34]

• ### Fractions on the number line

Practice plotting values on the number line as a passionate activist rises up and demands equity for all numbers, including fractions and decimals.

• ### GCSE Probability Part 1

Screencast of probability lesson for Intermediate GCSE Maths. [Time: 9:37]

• ### HCF and LCM explained

This video from Mathsmaster.org shows very clearly the step by step method of finding the LCM and HCF of two numbers. [Time: 2:52]

• ### HCF and LCM explained part 2

This video from Mathsmaster.org shows very clearly the step by step method of finding the LCM and HCF of two numbers using Prime Factorisation. [Time: 4:56]

• ### Hollywood Hates Maths

A supercut of moments in TV and cinema where characters downtalk maths. [Time: 2:15]

• ### How Long is a Metre?

Do you know how long a metre is? Where did this measurement come from? How long has it been used for? [Time: 2:58]

• ### How to Play War Cards

This video shows how to play War cards tweaked just a little to turn it into a maths game. [Time: 3:55]

• ### How to take a Compass Bearing

Steve Backshall teaches you how to use a compass to take a bearing and find out which direction you need to travel. [Time: 1:33]

• ### Human Graph Shapes

Chapel Hill-Chauncy Hall teacher Kelly Overbye demonstrates how she uses Multiple Intelligences, to teach her students about the slope of graphs. [Similar to Transum's Human Graphs] [Time: 1:55]

• ### Indices In Depth

An in depth look at the topic of indices from beginning to end. [Time 57:41]

• ### Indices Song

A free trial lesson from Math Upgrade dot com. [Time: 2:23]

• ### Introduction to Calculus

This video will give you a brief introduction to calculus. It does this by explaining that calculus is the mathematics of change. A couple of examples are presented, and then limits, derivatives, and integrals are introduced. [Time: 4:11]

• ### Investigation with Grid Mazes

This video explores different mazes composed of consecutive numbers and their greatest sum. [Time: 9:34]

• ### It's not hard (Averages song)

A really zany video revising mean, median, mode and range [Time: 3:49]

• ### Leap Year

Why do some years have an extra leap day and what is it for? [Time: 3.59]

• ### Line up the dot

A cartoon illustrated rap song explaining addition and subtraction of decimals. [Time: 1:49]

• ### Loci The Basics

A very clear demonstration of how to use a compass and a straight edge to draw common loci. [Time: 3:38]

• ### Log Tables

Logarithms and log tables - what Transum used before calculators! A Numberphile video. [Time: 5:09]

• ### Logarithms Introduction

A basic introduction to the concept of logarithms from the Khan Academy [Time: 9:48]

• ### Logic Puzzle

Only 10% of people get the correct answer to this simple logic puzzle. [Time: 3:55]

• ### Mathino Card Game

Introducing Mathino. A number facts card game. [Time: 4:59]

• ### Maths Fact Fluency

A four-step process for taking pupils on the path from acquisition to automaticity [Time: 5:47]

• ### Maths In The Movies

Mathematical errors in the movies. [Time: 6:47]

• ### Maths Jokes Explained

Some of your favourite maths jokes are dissected in forensic fashion. [Time: 6:59]

• ### Maths Revision Song

Lana Rose sings the song she wrote for GCSE maths revision. [Time: 2:28]

• ### Maths Without Words

A TED talk describing a visual approach to learning Maths from MIND Research. [Time: 8:17]

• ### Mean, Median and Mode Song

A free trial lesson from Math Upgrade dot com. [Time: 1:31]

• ### Memorise the Multiplication Table

A quick overview of methods for learning all one hundred multiplication facts from 1x1 to 10x10. [Time 3:58]

• ### Mental Maths Tricks

This video lesson shows you tips on how to multiply faster than ever! [Time: 10:44]

• ### Misconceptions

Some people have some strange ideas about multiplication and division. [Time: 2:12]

• ### Multiple Intelligence Theory

Dr. Howard Gardner explains his multiple intelligence theory. [Time: 7:54]

• ### Multiplication

A different way to multiply together numbers. Can you see how it works? [Time: 2:29]

• ### Multiplication Methods

Can you understand the explanation of these multiplication methods even though you may not speak the teacher's language? [Time: 2:34]

• ### Multiplication Song

Wako shows how to multiply 47 by 83 in his crazy cartoon singing way! [Time 2:58]

• ### Multiplying and Dividing Decimals

A straight forward, no nonsense demonstration of the methods of multiplying and dividing decimals. [Time: 5:02]

• ### Nature By Numbers

Cristóbal Vila created this short animated film that deals with geometric formulas that appear in nature such as the Fibonacci Sequence. [Time: 3:44]

• ### Negative Enlargement

A video from MathsWatch about Enlargement by a Negative Scale Factor. [Time: 2:42]

• ### Negative Numbers Ninja

Short but sweet, a Ninja country song about the rules for multiplying directed numbers. [Time: 0:40]

• ### Negatives Add and Subtract

From Corbettmaths, this video explains how to add or subtract positive and negative numbers. [Time: 4:53]

• ### New Way to Solve Quadratics

A computationally-efficient, natural, and easy-to-remember algorithm for solving general quadratic equations.

• ### Nine Times Fingers

Learn your 9 times table fast using your fingers! [Time: 4:42]

• ### Opposites

About the Japanese street grid system and other opposites. [Time: 2:48]

• ### Parallelogram

Instructional video showing how the area of a parallelogram can be determined. [Time: 1:34]

• ### Permutations

A video lesson on Permutations, calculating them using the counting principle and the nPr formula. [Time 13:56]

• ### Pi

Some information about Pi, the "celebrity number'. A video features maths-loving author Alex Bellos. [Time:9:42]

• ### Pi and Four Fingers

Why is The Simpsons not in Base 8? In this video Simon Singh talks about Pi and Maths in The Simpsons cartoon. [Time: 9:39]

• ### Pi Song

Kate Bush sings the digits of pi (audio only). [Time: 9:31]

• ### Place Value Introduction

We write numbers using only ten symbols (called Digits). Where we place them is important. [Time: 2:56]

• ### Place Value with Decimals

A Khan Academy video explaining place value. [Time: 3:59]

• ### Platonic Solids

What are platonic solids and why are there only five of them? [Time: 6:37]

• ### Polygon Song

Learn the names of the basic polygons. [Time: 3.19]

• ### Problems with Zero

Dividing by zero, zero divided by zero and zero to the power of zero - all pose problems! [Time: 12:59]

• ### Puzzles In The Simpsons

The Simpson's 26th season finale. 'Mathlete's Feat' is full of mathematical problems that Presh solves. [Time: 6:39]

• ### Pythagoras' Theorem

Pythagoras' Theorem water-proved (made in Switzerland) [Time: 19 seconds]

• ### Quadratic Formula Song

A song from Math Upgrade dot com. [Time: 2:57]

• ### Ratios And Rates

A lively explanation from Math Antics [Time: 8:49]

• ### Rounding to decimal places

A straight forward explanation from SLEP [Time: 2:20]

• ### Rounding to significant figures

A straight forward explanation from SLEP [Time: 3:20]

• ### Ruler and Compass Construction

A demonstration of standard ruler and compass constructions [Time: 3:04]

• ### Scatter Graphs

Maths teachers from England construct a scatter graph from their heights and shoe sizes. [Time: 3:20]

• ### Set notation and Venn Diagrams

GCSE Tutorial - Set Notation and Venn Diagrams - Shading, Intersections (higher and foundation) [Time: 18:32]

• ### Seven Thirteens

Does seven times thirteen really equal twenty eight? [Time: 2:34]

• ### Shading Venn Diagrams

Shading intersections, unions and complements in Venn diagrams. [Time: 15:56]

• ### Significant Figures

A CGP Maths Tutor explains what 'significant figures' are then talks you through some examples in this video tutorial. [Time: 4:23]

• ### Simple vs Compound Interest

This video portrays a visual of how to explain the difference between simple interest and compound interest in a very practical way. [Time: 5:51]

• ### Simultaneous Equations (Elimination)

This video demonstrates how to solve simultaneous equations by elimination. [Time: 2:51]

• ### Simultaneous Equations (Substitution)

This video demonstrates how to solve simultaneous equations by substitution. [Time: 25:24]

• ### Square Tricks

Math Tricks for Fast Calculation - How to square numbers between 10 and 20 without memorisation. [Time: 2:31]

• ### Statistical Significance

This video explains numeric and categorical data and helps you gain an understanding of when to apply a t-test or a chi-square test. [Time: 12:49]

• ### Straight Line Equations

A tutorial explaining how the graph of a straight line can be sketched from the equation in the form y=mx+c [Time: 36:45]

• ### Symmetry, reality's riddle

Marcus du Sautoy' TED talk illustrating some aspects of symmetry. [Time: 20:17]

• ### Taken 2

Using loci in the movies! Two intersecting circles are drawn to find a specific location. [Time: 1:32]

• ### Tetrahedron and Pyramid

A tetrahedron and a pyramid have edges of equal length. If they are glued together on a triangular face with the vertices aligned, how many faces will the new shape have? [Time: 3:47]

• ### The 50 Cent Riddle

A 50 cent coin has 12 equal sides. If you place two coins next to each other on a table, what is the angle formed between the two coins?

• ### The Beauty of Data Visualization

Complex data sets (like military spending, media buzz, Facebook updates) are turned into beautiful, simple diagrams. [Time: 18:17]

• ### The Birth Of Calculus

A fascinating BBC Two television programme from 1986. A documentary on Leibniz and the calculus. [Time: 24:43]

• ### The Counting Principle

The Counting Principle, Permutations, and Combinations. A fast paced, clearly illustrated video.

• ### The Infinite Chocolate Bar

A visual riddle! Can you explain? [Time: 0:54]

• ### The Invention of Money

An excerpt from the animated film American Dream [Time: 3:04]

• ### The magic of Fibonacci numbers

Arthur Benjamin gives a TED talk on Fibonacci numbers. [Time: 6:24]

• ### The Price is Right

How lucky can you get? How many ways are there to arrange the digits 23019? What strategies might a contestant use to get a price from these 5 digits. [Time: 5 minutes]

• ### The science of symmetry

An illustrated talk about the notion of symmetry and how it applies to nature. [Time: 5:08]

• ### The Train Fly Problem

This video from Mind Your Decisions teaches a trick so you can solve the puzzle quickly.

• ### Three Figure Bearings

A beginner's tutorial for measuring three figure compass bearings using a protractor. [Time: 24:48]

• ### TI-Nspire CX CAS overview

This is a video of a presentation introducing the TI-Nspire CS CAS calculator. [Time 11:15]

• ### Time calculations on a calculator

Time Calculations using Casio Calculator using the Degrees, Minutes and Seconds button. [[Time 3:23]]

• ### Times Tables in 10 minutes

Jill Mansergh uses a number stick to teach the 17 times table in less than ten minutes. [[Time: 9:07]]

• ### Transformations Song

The four basic transformations have been put to music! [Time: 2:26]

• ### Trigonometry and Pythagoras

A trigonometry and Pythagoras theorem revision song [Time: 3:31]

• ### Trigonometry in 3D

This video from Corbettmaths goes through a typical 3D trigonometry question - finding an angle in a cuboid. [Time: 6:26]

• ### Using a Calculator

Want to know how to use your scientific calculator? We thought this might be useful - here's an easy to follow, step by step guide. [Time: 13:00]

• ### Vectors

An introduction to vectors, equal vectors, opposite vectors, vector addition, parallel vectors and also many GCSE questions. [Time: 20:36]

• ### Venn Diagrams Notation

This video is from MathsWatch and explains all you need to know about using set notation with Venn diagrams. [Time 2:35]

• ### Visualising Data

Hans Rosling's famous lectures combine enormous quantities of public data with a sport's commentator's style to reveal the story of the world's past, present and future development. [Time: 4:47]

• ### Volumes of Cylinders

Dr Frost demonstrates how to find the volume of a cylinder with a number of worked examples. [Time: 5:41]

• ### What Are Functions?

A basic introduction to the concept of functions. [Time: 11:33]

• ### What Are Percentages?

A light-hearted look at percentages from Math Antics. [Time: 8:52]

• ### What are Vectors?

The one thing physicists, air traffic controllers, and video game creators all have in common! An animated Ted Ed talk by David Huynh. [Time: 4:40]

• ### Working with Indices

Demonstrations of how to work with the laws of indices (powers). [Time: 9:58]

• ### Xmas Facts and Figures

How long can Santa spend at each home delivering presents? This and other festive questions answered. [Time: 3:58]

• ### Xmas Wrapping Maths

Did you know there is a formula for calculating the amount of wrapping paper needed? [Time: 4:21]

• There are 195 videos on this page. Don't forget If you are looking for a particular topic you may like to begin on the topics page where you can also find Starters, visual aids and interactive resources.

• ### Screen Test

Memorise the mathematical facts in the video then answer the ten quiz questions to earn a trophy.
A selection of short (one to two minutes) factual videos have been chosen for this test of memory. When the video has finished playing reveal the questions based on the video. The first questions test recall while the latter questions require application of the facts. Click on one of the images below to begin.

## Long Way Down

• ### Mathematical Trivia

The mathematical factoids you never knew that you never knew. What is a googol? Who invented the equals sign? Which number comes first if they are arranged alphabetically? What is the answer to the ultimate question of life, the universe, and everything? What is the maximum number of moves it will take to solve a Rubiks cube no matter which of the 43 quintillion possible starting positions you begin with? Click on the picture to the left to find out.

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