Sleep is anything but a waste of time. While many people think of catching ZZs as the body “shutting off” until morning, nodding off actually activates a complicated process that helps you feel rested and healthy […]

As you know, “The happiest time of the year” is fast approaching and with all the stressful, hectic and busy things happening in your life, it can be easy to drift away from the most joyous holiday of the year. As […]

Taking a selfie is an art form.
With front-facing phone cameras reaching saturation point, selfie devotees are having to go the extra mile to make their self-taken photos stand out from the crowd. In a quest f […]

Elements and Symbols
The atoms are particles of elements and are represented by chemical symbols. A chemical symbol is a sign and it is made up of a letter or two letters to represent the atom of the element. […]

Natural food may be healthier than processed, but some can have strange effects on our bodies.
A British graduate chemist and secondary school teacher has created a number of infographics to explain the […]

Word Problem Involving Quadratic Equations
Write a “let” statement and equation for each example. Explain the difference.

Find two consecutive integers whose sum is 13

Let x = first integer
x + 1 = […]

Introduction
Equal volumes of different substances have different masses or weights. For example 1 m3 of lead weighs differently from 1 m3 of wood. Also 1 m3 of water has a weight different from that of sulphuric […]

ALKYNES
An alkyne is a molecule made up entirely of carbon and hydrogen where on or more carbon atoms are connected by triple bonds. The general formula for an alkyne is CnH2n-2 where n is the number of carbon […]

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 + […]