Introduction
Sometimes we do not need to measure of calculate things exactly. We may only wish to have a rough idea, or to calculate only to a certain degree of accuracy. It is in such cases we talk of decimal […]

The New Year is a time for both reflecting on the past year and setting goals for the year ahead. No matter what happened during the past year, the New Year is a time when everyone gets a second chance. If you had […]

Influenza, commonly referred to as the ‘flu’ is one of the easiest contagious diseases people suffer from. The flu is accompanied by a runny or blocked nose, cough, throbbing headache, sore throat and fever.  It […]

Definition of Projectile Motion: A projectile is anybody that is thrown or projected. In other words, a projectile is an object upon which the only force acting is gravity. The projectile motion has two elements: […]

Walk into a school, airport, shopping mall, or even a church and the image is always the same, teens and tweens have their heads down, ear buds on, and a mobile device in their hand. This generation is commonly […]

Sum and difference
The sum of a set of numbers is the result when the numbers are added together.
Example
The sum of four consecutive numbers is 58. Find the numbers.
Let the numbers be n, n+ 1, n + 2, n + […]

There’s no question that science has gone a long way toward solving some of nature’s deepest mysteries — everything from finding what black holes are made of to why zebras have stripes.
But there are still […]

Concepts of Time
Time itself can be defined as that in which developments and happenings can be distinguishably analyzed with reference to before and after.
In the International System of Units (SI), the unit of […]

Adding and subtracting directed numbers
Numbers can be shown on a number line which extends above and below zero. This gives positive and negative numbers.

The signs + and – show the direction from 0. P […]