## Group 2

### Support Programme

The following shall turn up for the Support Programme this week.
We will be revisiting Chapters 1 & 2.
 Support Programme Date: 27 February (Thursday)Time: 2 pm to 2.50 pmVenue: S1-04 Classroom 5 LIM XIN YI SAMMI 7 NGO EE YING 9 SAFFRON SOPHIA LEE 10 TAN YOU YI 11 ADAM AIMAN B IZHAM 12 AFIQ PRASANTO 13 CHAN SHAN JIN, AERON 15 JOSEPH FOO CHEE YANG 17 MIN KHANT HTEIN 18 MUHAMMAD ALFAATIH BIN MOHAMED 21 PAN JIANG YU, ETHAN 24 TALGERI RAVIRAJ RAMCHANDRA 25 ZAVIER TEO MENG JUN

## Saturday, 22 February 2014

### Topic Review 2: Real Numbers - Is there a more efficient way of evaluating this?

In this question,
the student converted all the mixed numbers to improper fractions; followed by finding a common denominator of all the terms (resulting 120).
Is this step necessary?

### 6 AM Quiz: Let's Test FIDO out!

In this round of 6 am quiz, you will attempt to uncover the mystery behind Fido's Mind-Reading ability.

Fido claims that he can read our mind.
Click at the following link to test him out!!! :
http://www.digicc.com/fido/

There are several ways to explain Fido's trick, using mathematical reasoning.
Make an attempt to use ALGEBRA to explain the "trick"?

## Thursday, 20 February 2014

### Algebra... Different "Faces" of Algebra (I)

The total length of 4 roads is (3x - 1) km.
What are the possible lengths of the 4 roads in kilometres?

e.g. The length of the 4 roads are: x km, x km, x-7 km, 6 km
Check: x + x + (x - 7) + 6 = 3x - 1

### Algebra... Different "Faces" of Algebra (II)

The perimeter of a rectangle is (6x + 5y) cm.
Suggest 2 possible dimensions of the rectangle.

e.g.
Length of rectangle = 2x + 2y cm
Breadth of rectangle = x + 0.5y cm
Check:
Perimeter = 2 (2x + 2y) + 2 (x + 0.5y) cm
= 4x + 4y + 2x + y cm
= 6x + 5y cm

## Wednesday, 19 February 2014

Could you UNCOVER THE MYSTERY behind the crystal ball?
(in the Algebraic way!)

## Monday, 17 February 2014

### Algebra... Which is larger? (II)

Jennifer says, "5x2  is always smaller than  (-5x)2. "

This question is compulsory.

### Algebra... Help! What's Wrong?

Jane did the following:
• 3a + b = 3ab
• 2s + 4t = 6st
Do you think Jane is correct in her algebraic manipulations?
If yes, please write down examples to show that her answer is correct.

If not, explain to Jane her mistakes and help her to correct.

### Algebra: Equation vs Expression

(I) Algebraic Expressions vs Equations
The following are expressions
• 3x
• 5 - 2y
• p + 2q - 45
• mn
The following are equations:
• 2x = 4
• x + 8 = 20
• x² = 36
• 2x + y = 4
Can you tell the difference between an expression and an equation?

(II) Coefficients, Variables and Constants
In the following algebraic expressions:

(a) 6x
• x is a variable
• 6 is the coefficient of x
• There is no constant
(b) 2y + 5
• y is a variable
• 2 is the coefficient of y
• 5 is the constant
(c) 3m + 7n + 9
• m and n are variables
• 3 and 7 are coefficients of m and n respectively
• 9 is the constant
(d) p + 2q - 45
• p and q are variables
• 1 and 2 are coefficients of p and q respectively
• -45 is the constant
(e) 5a - 3b + 1
• a and b are variables
• 5 and -3 are coefficients of a and b respectively
• 1 is the constant
(f) x - y
• x and y are variables
• 1 and -1 are coefficients of x and y respectively
• There is no constant
When given an expression, are you able to pick out the variable(s), coefficient(s) and constant terms?

Let's learn more terms that are related to Algebra through the Hangman activity (select "Algebra")

## Thursday, 13 February 2014

### Algebra... Which is larger? (I)

Which is larger in magnitude?
5 + n or  5n