[Formative Quiz] Algebra: Simple Expansion

Source: Workbook 1B Worksheet 4C Q1, Q3 (selected questions)
There are 2 tasks to be completed.

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Simple Expansion (1)

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Simple Expansion (2)

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(Consolidation) Algebra: Simple Expansion (3)

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[Formative Quiz] Algebra: Expressions (1)Addition & Subtraction

Source: Workbook 1A

Read the instructions in the padlet (1st column). 

Based on the feedback (by the next lesson), you are strongly encouraged to continue to practise the rest of the questions.

REMEMBER: 

Fluency and proficiency come through hardwork that can be achieved by no one else, other than yourself.

Click HERE to access padlet

[Formative Quiz] Algebra: Expression (2) Subtraction

Source: Maths Workbook 1A Worksheet 4B

In this question, you HAVE TO write the expression before simplifying it.

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I am a Translator!

Click HERE to attempt the task

Getting to know... ALGEBRA!

Let's watch these 2 clips from the Khan Academy to learn the "background" and a quick introduction of Algebra!

[Task 1] Substitution: Can you tell What's Wrong?

Indicate your responses under comments:
(i) Identify the error(s) and describe what's wrong.
(ii) What is the correct answer?

Post-Lessson elaboration

As discussed in the lesson, the errors in the above working:

• Line 1: Error in first 2 terms - Should not be (2 x 3)^2; similarly, should not be (3 x 2)^2
• Line 1: While the substitution of the 3rd term is correct, should insert () for "-1". This applies to how "-1" was written in lines 2 & 3.

The suggested worked solution:

[Task 2] Algebra... Which is larger?

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Which is larger in magnitude?

5 + n or  5n

Explain your answer clearly with examples.
Indicate any assumptions made.

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Click HERE to access padlet

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[Formative Quiz] Algebra: Substitution

Source: Workbook 1A

Read the instructions in the padlet (1st column). 

Based on the feedback (by the next lesson), you are strongly encouraged to continue to practise the rest of the questions.

REMEMBER: 

Fluency and proficiency come through hardwork that can be achieved by no one else, other than yourself.

Click HERE to access padlet.

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?
Click HERE to read more about these...

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