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Mathematics
How To Read Inequality Symbols
This video explains how to read inequality symbols; greater than and less than. We explain a quick tip to help you remember which one is which. Practice questions and answers are at the end of the video.
Circumference of a Circle
This video will explain how to find the circumference of a circle given the diameter or the radius. We show you how the formula is actually derived.
Rotational Symmetry of a Circle
This video explains why the order of rotational symmetry of a circle is infinite.
Video: Sharing In A Given Ratio
This video explains sharing in a given ratio. Two sets of practice questions are provided at the end of the video.
The Four Transformations In Maths
This video explains the four transformations in maths: translation, rotation, reflection and enlargement. Two sets of practice questions are provided at the end of the video.
Video: Lines Of Symmetry Of 2D Shapes
This video explains lines of symmetry of 2D shapes including triangles, quadrilaterals and regular polygons. Practice questions are at the end of the video.
Video: Pentominoes Puzzles
This video explains what pentominoes are and provides four pentominoes puzzles and solutions.
A great activity to develop your problem solving skills!
How to find the volume of a frustum
This video shows you how to find the volume of a frustum and explains what a frustum is. We also explain how to find the radius of the smaller/removed cone. There are two practice questions at the end of the video.
Number Riddles With Answers
This video explains how to solve number riddles. 8 riddles of varying difficulty (and with answers) are provided for you to complete. Activities like this help to promote number sense and problem solving skills.
Multiplying Out Brackets
This video covers how to multiply out/expand single brackets, including brackets with powers and negative multipliers . Practice questions are at the end of the video.
Square Numbers Explained
This video explains what square numbers are and provides practice questions and answers.
How many squares are on a chessboard
How Many Squares Are On A Chessboard? The answer is not 64!
This puzzle will help you develop your problem solving skills. The answer is given at the end of the video but make sure to try work it out yourself first.
Cube Numbers Explained
This video explains what cube numbers are, what it means to cube a number and provides a range of practice questions and answers at the end of the video.
Mental Multiplication Trick
This short video shows you a quick trick which can be used for some mental multiplication questions. Looking at the whole question first, without initially working from left to right, can help reduce the load on short-term memory when doing mental arithmetic. Practice questions at the end of the video.
Note this tip only works with certain problems but working this way encourages you to assess the question first and become more flexible when working with numbers.
How To Find The Area Of A Rectangle
This video explains what area is and how to calculate the area of a rectangle or square. The video uses a reversed task style of teaching. Practice questions are at the end of the video.
Square Roots Explained
Square Roots Explained: what exactly is a square root? Practice questions at the end of the video.
Reciprocals of whole numbers
This video explains what a reciprocal of a whole number is and what a reciprocal of a reciprocal is. Practice questions at the end of the video.
Can You Solve These Shapes Puzzles?
This video provides five shape puzzles, designed to develop problem solving and algebraic skills. The following videos may help:
Using algebra to find the missing value: https://youtu.be/fxoF6aGYTpk
BODMAS: https://youtu.be/nLQLBr4DSj8
How to partition numbers
This video explains how to partition numbers. This is an extremely important skill for both children and adults to have. It can greatly assist with mental arithmetic and being able to manipulate numbers. We cover addition and subtraction using partitioning. Practice questions are at the end of the video.
Number Patterns: Solutions Explained
This video provides an explanation for the solutions to the number patterns on our previous video! This video is a good introduction to sequences for new learners, without being bogged down with the nth term jargon, which can be introduced at a later date. Watch this video if you are struggling with the nth term topic.