Mathematics Scheme of Work, SS1, 3rd Term

What type of polygon is shown in the above image?

• A. Nonagon

• B. Decagon

• C. Octagon

• D. Hexagon

• E. Hepagon

• F. Pentagon

Which of the following is not part of a circle?

• A. Section

• B. Sector

• C. Segment

• D. Semicircle

• E. Secant

• F. Center

What angle is shown in the above image?

• A. Complementary

• B. Supplementary

• C. Acute

• D. Obtuse

• E. Reflex

• F. Straight

An angle greater than 90^o but less than 180^o is termed _____.

• A. Complementary

• B. Supplementary

• C. Acute

• D. Obtuse

• E. Reflex

• F. Straight

Factorize 12a² - 20a + 3

• A. (6a - 1)(2a - 3)

• B. (6a - 1)(2a + 3)

• C. (6a + 1)(2a - 3)

• D. (6a + 1)(2a + 3)

• E. (-6a + 1)(2a - 3)

• F. (-6a + 1)(2a + 3)

Simplify 10ab + 7ab

• A. 17ab²

• B. 17a²b²

• C. 3ab²

• D. 3a²b²

• E. 17ab

• F 3ab

Which of the following is not a type of angle?

• A. Right angle

• B. Left Angle

• C. Acute Angle

• D. Complete Angle

• E. Straight Angle

• F. Reflex angle

Two lines that can never meet each other are best considered as _____ lines.

• A. straight
• B. vertical
• C. horizontal
• D. parallel
• E. oblique
• F. perpendicular

The opposite sides of a dice will always give a sum of seven

31,556,926 seconds makes one year

From 0 through 1000, the only number that has the letter 'a' in it is 'one thousand'

÷

The division symbol '÷' is actually called an obelus

Four is the only number in the English language that is spelt with the same number of letters as the number (4) itself

40 is spelt as forty and not 'fourty'. It is the only number that is spelt with letters arranged in alphabetical order

An odd number is a number that cannot be divisible by 2.

Every odd number has an 'e' in its spelling. They include:

• One
• Three
• Five
• Seven
• Nine

555 in Thailand sounds like 'hahaha'. This is because the number '5' means 'ha' in Thailand

In mathematics, 10! means 10 factorial. Below is its calculation:

10! = 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1 = 3628800

Interestingly, 3628800 seconds is the same as 42 days

42 days is the same as 6 weeks

We can therefore say that 10! equals 6 weeks or 3628800 seconds in mathematics

When you multiply 111,111,111 by 111,111,111; the result equals 12,345,678,987,654,321

Let's use algebra to explain the simple statement below:

I am a number. When you subtract 3 from me, the result is 9. what number am I ?

Of course we know the answer is 12. You probably guessed it from your mind because it was that simple. The truth is, We could have a much more complicated statement of such; and that is where algebra comes into play.

Now, to apply algebra in the above statement, we use letters or alphabets to represent the unknown number(s). So using algebra, we can write:

• Let the number be y

• y - 3 = 9

• y = 9 + 3

• y = 12

Please read more on algebra here

The image above shows a right angled triangle. The angle of the above right triangle is denoted as θ. Below are some points to note:

Hypotenuse is always the longest side of the triangle.

Opposite is the side opposite the angle (θ)

Adjacent is the shorter side next to the angle (θ)

Each of Sin θ, cos θ and tan θ are the ratio of sides of the right triangle. They are calculated by using the formula (margic word) sohcahtoa:

soh

Sin θ = Opposite/Hypotenuse

cah

Cos θ = Adjacent/Hypotenuse

toa

Tan θ = Opposite/Adjacent

Please read more on sine, cosine and tangent here

Circumference in mathematics means the distance around the edge of a circle (or a another curved surface).

Circumference is to circle or any other curved surface

Perimeter means the distance around a square or rectangle or polygon.

Perimeter is to square or rectangle or polygon