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### Graphs and plotting – primary mathematic

Graphs The common graphs at primary level are the line graphs and bar graphs. Line graph A line graph is a type of chart used to show ... Read More

### Factors affecting the equilibrium constants, Kc and Kp

These factors include temperature, concentration, pressure and catalyst. these factors are well explainned in this video Read More

### Probability-primary mathematics

Probability Probability is the likelihood or chance of an event occurring. Many events can't be predicted with total certainty. The best we can say is ... Read More

### Algebra-primary mathematic

Algebra Algebra is a branch of mathematics dealing with symbols and the rules for manipulating those symbols. In elementary algebra, those symbols (today written as ... Read More

### Bases – Upper primmary

Bases We are accustomed to writing numbers in base ten, using the symbols for 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 ... Read More

### Simple interest -Upper primary mathematics

Simple interest There is a formula for simple interest I = PRT where I = interest P = amount borrowed (called "Principal") R = interest ... Read More

### Speed and distance- primary mathematics

Distance, speed and time Distance is a numerical description of how far apart two objects are from each other.   Speed is distance over time taken ... Read More

### Mean, mode, media , range, revision questions and answers-primary mathematics

Mean, median, mode, range The "mean" is the "average" you're used to, where you add up all the numbers and then divide by the number ... Read More

### Pie Chart – Upper primary mathematics

Pie chart It is a circular graph which is used to represent data Constructing Circle Graphs or Pie Charts A pie chart (also called a Pie Graph ... Read More

### Bearing – Upper primary mathematics

Bearings A bearing is an angle, measured clockwise from the north direction. Example What is the bearing of A from B in the diagram below? The bearing ... Read More

### Volume – Upper primary mathematics

Volume This is the amount of space taken up by an object, while capacity is the measure of an object's ability to hold a substance, ... Read More

### Area – Upper primary mathematics

Area Area is the size of a surface. Formulae of the area of simple shapes Example Find the area of the base of cuboid below. Solution ... Read More

### Lines, Angle, parallel line, polygons- upper primary mathematics

Angles In geometry, an angle can be defined as the figure formed by two straight lines meeting at a common end point. An angle is represented ... Read More

### Perimeter- Upper primary mathematics

Perimeter.  Perimeter is the distance around a two-dimensional shape Formulas for finding perimeter of regular objects Perimeter of a rectangle = 2l + 2w =2(l + ... Read More

### Angle construction-upper primary mathematics

Constructing Angles of 60º, 120º, 30º, 150, 90º and 450 How to construct an angle of 600. (i) Draw a line and select point A. ... Read More

### Sets – upper primary mathematics

SETS A set is a collection of distinct objects, called elements of the set A set can be defined by describing the contents, or by listing the elements of ... Read More

### Roman numerals – upper primary mathematics

Roman numerals The table below equivalent of roman numerals to Arabic numeral 1 2 3 4 5 6 7 8 9 I II III IV ... Read More

### Force and simple machine – upper primary science

Force A force is the pull, push or a lift on an object. Force is measured in Newtons using a spring balance   Effect of ... Read More

### Preparation of hydrogen

procedure of preparation of hydrogen and worked examples Read More

### Properties of matter – upper primary science

PROPERTIES OF MATTER Matter Matter is anything that occupies space and has mass. Mass is what matter is made up of. Matter exists in three ... Read More

### Magnetism-upper primary science

Magnetism A magnet is a piece of metal which has ability to attract other metals. Magnetic substances are those substances which can be attracted by ... Read More

### Preparation of oxygen with worked examples (O-level chemistry)

https://youtu.be/mBPSCDU8jws principles of preparation of gases i.e. preparatory state, purification stage, drying stage, and collection stage. Preparation oxygen, sample questions and answers Read More

### Sound energy-upper primary science

Sound energy Sound is  a form of energy that enables us to hear. It is caused by vibration of objects Properties of sound Pitch is ... Read More

### Electric energy -upper primary science

Electricity This is a form of energy that is produced by moving electrons or electrical charges. There are two types of charges; positive charges and ... Read More

### Light energy – upper primary science

Light It is a form of energy that enables us to see. Other uses of light It is used by plants for photosynthesis It is ... Read More

### Heat energy – upper primary science

Heat energy This is a form of energy that flows from one point to another due to temperature differences. Temperature a physical property of matter ... Read More

### Energy(introduction) – Upper primary science

ENERGY Energy is the ability to do work. It is measured in joules Work is a product of force and distance Work = force x ... Read More

### Weather and weather instruments-upper primary science

WEATHER Weather is the atmospheric condition of a place at a given time over a short period of time. The study of weather is called ... Read More

### Animal-husbandry-upper primary science

Domestic animals The animals that are kept at home are called domestic animals. Domestic animals include pets and livestock. Pets include cats, dogs and pigeons. ... Read More