The following subjects are offered in the Secondary curriculum:
- Accounting
- Arabic
- Art
- Business Studies
- Design Technology
- English
- French
- Geography
- History
- Information and Communications Technology (ICT)
- Mathematics
- Physical Education
- Science
| Circulation (Higher) | |||||||||||||
Blood One function of the circulation system is to transport substances around the body in the blood. Blood consists of a fluid called plasma containing white blood cells, red blood cells and platelets. Many substances are transported dissolved in the plasma. These include:
White blood cells form part of the body’s defence system against micro-organisms. They have a nucleus. Platelets are fragments of cells. Platelets help blood to clot at the site of a wound. They do not have a nucleus. Red blood cells transport oxygen from the lungs to the organs. They do not have a nucleus. They are packed with a red pigment called haemoglobin. In the lungs, oxygen combines with haemoglobin to form oxyhaemoglobin. In other organs the oxygen is released as the oxyhaemoglobin splits up into oxygen and haemoglobin. | |||||||||||||
| The Heart The heart pumps blood around the body. The wall of the heart contains muscle fibres. The diagram below shows the structure of the heart. Blood returns to the heart from the body in veins. It enters the right atrium, which contracts forcing the blood into the right ventricle. When this contracts it forces blood out of the heart through the pulmonary artery to the lungs, where carbon dioxide is removed and oxygen is absorbed. Blood from the lungs enters the left atrium of the heart and is forced into the left ventricle. This chamber has a very thick muscular wall to push blood out of the heart into the main artery, theaorta, and around the body. There are valves in the heart to make sure that blood flows in the correct direction. The heart is said to be a double pump, because the right side of the heart pumps blood to the lungs, and the left side pumps it around the body. This is called a double circulation. | |||||||||||||
| Blood Vessels Blood travels away from the heart to the organs through arteries, and returns through veins. Arteries have thick walls containing elastic fibres, so they can stretch as blood is forced through, and muscle to pull them back into shape. Veins have thinner walls because the pressure inside them is much lower than in the arteries. They often have valves to prevent the back-flow of blood. Capillaries join arteries to veins. They are very narrow, thin-walled blood vessels. Substances, like oxygen and food needed by the cells in body tissues, pass out of the blood through the capillary walls. Substances produced by the cells, for example carbon dioxide, diffuse in the opposite direction.
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| Number (Intermediate) - Types of Number |
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| Prime Numbers A prime number is a number which can only be divided by one or itself. The smallest prime number is 2. 2 can only be divided by 2 or 1. Here are the first 20 prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71. Some numbers you may not be sure about, for example 51. In this case, try dividing by 3 or 7. e.g. 51 ÷ 3 = 17 So 51 is not a prime number. |
| Square Numbers A square number is formed by multiplying a number by itself. For example 2 x 2 = 4 4 is a square number. Here are the first 10 square numbers: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100. The square root of a square number is an integer (a whole number). For example the square root of 16 is 4. The meaning of square root is, ‘that figure which multiplied by itself gives the number'. So 4 is the square root of 16 because 4 x 4 = 16. The symbol for square root is |
| Cubic Numbers A cubic number is formed by multiplying a number by itself three times. For example: 2 x 2 x 2 = 8 8 is a cubic number. The first 5 cubic numbers are: 1, 8, 27, 64, 125. |
| Factors Factors are numbers which will divide into a number without any remainder. Example 1: factors of 12 are 1, 2, 3, 4, 6, and 12, because: 12 ÷ 1 = 12 12 ÷ 2 = 6 12 ÷ 3 = 4 12 ÷ 4 = 3 12 ÷ 6 = 2 12 ÷ 12 = 1 Example 2: factors of 20 = 1, 2, 4, 5, 10, and 20. Note: all prime numbers have only two factors i.e. 1 and themselves. For example, factors of 7 = 1 and 7 only. |