This video covers a variety of GCSE exam style practice questions on a range of topics. Pause the video while you work them out.

In this video, you’ll learn all about the fascinating world of Roman numerals. With clear and concise explanations and examples, you’ll gain a deep understanding of how to read and write Roman numerals. Practice questions and answers are at the end of the video.

This video covers the topic of estimation in maths; it explains what estimation is and what it is used for. Practice questions and answers are at the end of the video.

This video provides a range of number patterns (sequences) and answers. Explanations of how these are solved will be given in next weeks video! Comment below with your own solutions!

This video provides more GCSE Maths exam practice questions on a variety of topics.

This video contains four maths puzzles with answers. These maths puzzles are great for brain training and for lesson starters.

The Handshake Puzzle: a classic mathematical puzzle coming from the topic of combinatorics and will develop your problem-solving skills. This video provides a demonstration of how to solve the puzzle and asks you to generalise further by producing a formula.

This video explains what triangular numbers are and the patterns associated with them. Two puzzles are at the end of the video. Skip to: 00:00 Introduction 00:22 What exactly is a triangular number? 00:42 What patterns do you notice about the sequence? 01:43 How to find a triangular number 02:20 Practice questions/ puzzles

This video will explain how to find the area of a parallelogram, what a parallelogram is and provides a visual demonstration of why the formula for the area of a parallelogram works. Practice questions are at the end of the video. Skip to: 00:00 Intro 00:19 What is a parallelogram 00:53 How to find the area of a parallelogram 01:18 Visual demonstration for formula 01:41 Area of a parallelogram example 02:10 Practice questions

This video explains how to find the nth triangular number. For a refresher on triangular numbers see our video: https://youtu.be/3G0VozmToZ4 Practice questions are at the end of the video. Skip to: 00:00 Introduction 00:25 How to find the nth triangular number 01:37 Formula for finding the nth triangular number 02:38 Practice questions

This video will explain how to find the area of a trapezium and provides a visual demonstration of the formula, using the area of a parallelogram. Skip to: 00:00 Introduction 00:17 What is a trapezium 00:43 Trapezium measurements 01:03 Visual demonstration of formula 01:56 Formula for area of a trapezium 02:06 Example 02:36 Practice questions

This video explains how to calculate upper and lower bounds when a number has been rounded. Practice questions and answers at the end of the video. Skip to: 00:00 Introduction 00:19 What are upper and lower bounds 01:02 Degree of accuracy 01:40 Examples 02:35 Practice questions

This video explains what the multiples and factors of a number are. Practice questions are at the end of the video.

This video will explain the four types of triangles and their properties: right-angled, equilateral, isosceles and scalene triangles. Practice questions are at the end of the video.

This short video explains how to identify semi-regular tessellations: tessellations made up of two or more regular polygons. Practice questions are at the end of the video. For an explanation of regular tessellations, see our video: https://youtu.be/PiOa_vWKJA4 Skip to: 00:00 What are semi-regular tessellations 00:34 How to identify the pattern at the vertex 01:21 Practice questions

This video explains how to find the prime factors of a number using the factor tree method. Practice questions are at the end of the video.

This video will show you how to find the volume of a cuboid. Practice questions and answers are at the end of the video.

In this video we show you how to draw 3D shapes on isometric paper. There are practice questions at the end of the video. You can download some isometric paper from here: https://nrich.maths.org/isometricpaper

We explain how to find the lowest common multiple of two or more numbers, using two methods: listing the multiples and using prime factorisation. Practice questions and answers are at the end of the video.

This video explains two methods to find the highest common factor (also known as the greatest common factor) of two or more numbers: by listing the factors or by prime factorisation. For a refresher on multiples and factors: https://youtu.be/4EkhaETrcnY For a refresher on prime factors: https://youtu.be/1zagn5okZgM