Curated Video
Nets of 3D Shapes
This video explains what nets of 3D shapes are and includes of range of activities which can be used during lessons or during revision.
Curated Video
Understanding Dimensions
This video explains the different dimensions used in maths in relation to length, width and depth, as well as x, y and z axes. Practice questions are at the end of the video to test your understanding.
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Keywords Used in Geometry
This video explains the definitions of some common mathematical keywords used in geometry., such as congruent, hypotenuse and quadrilateral.
Curated Video
How to Find the Perimeter
This video explains how to find the perimeter of 2D shapes such as squares, rectangles, triangles and composite shapes. A range of practice questions are at the end of the video.
Curated Video
Finding the Area of a Square or Rectangle
In this video we explain how to find the area of a square or rectangle; what area means and how to calculate it. Practice questions and answers are provided at the end of the video.
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3D Shapes Explained
This video provides an introduction lesson to 3D shapes. We go through the names of some common 3D shapes and the properties of 3D shapes. Practice questions and answers are at the end of the video.
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Rotational Symmetry: Test Your Knowledge
This video provides a range of practice questions and answers on the topic of rotational symmetry.
Curated Video
Interior and Exterior Angles Test Your Knowledge
Test your knowledge of interior and exterior angles in maths! This video provides a range of practice questions and answers on the topic!
Curated Video
Finding the Area of a Compound Shape
This video explains what compound / composite shapes are and how to find the area of compound shapes. Practice questions and answers are at the end of the video.
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Finding Surface Area of a Rectangular Prism
In this math video we will be finding the surface area of a rectangular prism. We will begin by understanding that surface area is the sum of the areas of all the faces of the shape. We will identify the six faces of the given net of a...
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Slicing a 3D Figure
In this math video we will describe the two dimensional face formed from slicing a 3D figure. We will relate the number of faces passed through when slicing to the number of sides on the two dimensional cross section. We will visually...
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The Four Transformations in Math
This video explains how to understand the four transformations in maths: translation, rotation, reflection, and enlargement. Two sets of practice questions are provided at the end of the video: performing and describing transformations.
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Introducing Solids
A video entitled “Introducing Solids” that recognizes the key attributes of cubes, cones, cylinders, and spheres.
Curated Video
Discovering Perimeter
Mr. Addit explains how to calculate the perimeter of a square and a rectangle. He then gives examples of calculating the perimeters of three-sided, five-sided, and six-sided shapes.
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Interior and Exterior Angles Explained
This video explains interior and exterior angles of a polygon. In particular: how to calculate interior and exterior angle, how to find the sum of interior or exterior angles, and how to find the number of sides of a polygon with just an...
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How to Find the Order of Rotational Symmetry
This video explains what rotational symmetry is, and how to find the order of rotational symmetry of a shape. Practice questions and answers are at the end of the video. This is an updated, 4K version of our previous video.
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An Introduction to Polygons
This video covers the names of polygons and 2D shape properties. Learn the difference between regular & irregular polygons and the names of these polygons such as pentagon and hexagon.
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Plans and Elevations in Maths
Plans and Elevations Maths: This video explains how to draw 2D projections of 3D shapes: plans, front elevations, and side elevations. Practice questions and answers are at the end of the video.
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Tessellations in Maths Explained
This video explains what tessellations are, and how to calculate if a shape will tessellate to form a pattern.
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Basic Angle Rules
Angle Rules: This video explains the basic angle rules which are extremely helpful to know when solving geometry problems. Rules covered are: angles in a triangle, angles in a quadrilateral, angles on a straight line, angles around a...
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Angles in Parallel Lines
This video explains angles in parallel lines, the rules for an angle formed by a transversal (line) crossing a pair of parallel lines: corresponding angles, alternate angles, corresponding angles, and allied angles. Practice questions...
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Reflections
Mr. Addit explains the term reflection. He also reflects various plane shapes across the line of symmetry and examines the reflected images.
Curated Video
The Line of Symmetry
Mr. Addit explains the line of symmetry, and examines a variety of plane shapes to find lines of symmetry.
Curated Video
Introduction to Angles
Mr. Addit describes the three main types of angles and the way that those angles can be measured.