Math Theory and Revision Guides

Easy-to-follow theory and revision guides for math students in grades K-8th (age 4-14).

Area Of A Square

What is a Square? A square is a quadrilateral that has four equal sides and four right angles. In other words, a square is a quadrilateral with the following properties:…

Different Types Of Shapes

What are Shapes? The boundary or outline of an object is called its shape. We come across many shapes in our daily lives and kids start recognising these shapes even…

Area Of A Polygon

What is a Polygon? A polygon is a closed curve (figure) formed by the line segments such that: No line segments intersect except at their endpoints. No two line segments…

Area Of Parallelogram

What is a Parallelogram? A parallelogram is a quadrilateral, whose each pair of opposite sides is parallel. Suppose we have a parallelogram ABCD such that AB and DC are a…

Long Multiplication

Long Multiplication We know that multiplication is a form of repeated addition. While it is easy to multiply two numbers that are of one-digit or two digits using multiplication tables,…

What are three-dimensional shapes?

Geometry defines a three-dimensional shape as a solid figure or object with three dimensions – length, width, and height. In contrast to two-dimensional shapes, three-dimensional shapes have thickness or depth….

What is Geometry?

Geometry is a branch of mathematics that primarily deals with the shapes and sizes of objects, their relative position, and the properties of space. It comes from the Ancient Greek…

What are two-dimensional shapes?

Children notice shapes from a young age, even if they don’t know what the shapes are called. Young kids usually take longer learning about specific properties of shapes, like how…

Area of a Triangle

Triangles The word triangle is made from two words – “tri” which means three and “angle”. Hence, a triangle can be defined as a closed figure that has three vertices,…

Mean, Median And Mode

Mean Definition of Mean The mean, also known as the “Arithmetic Mean” of a group of observations is the value that is equally shared out among all the observations. In…

Area Of A Rectangle

Area of a Rectangle A rectangle is a type of quadrilateral that is similar to a square in the fact that it has that equal opposite sides and four right…

Multiplication

What is Multiplication? The process of finding out the product between two or more numbers is called multiplication. The result thus obtained is called the product. Suppose, you bought 6…

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