Challenging Algebra #5

Clarity is important!

Present your working clearly and systematically.

Post your answer in the Maths blog

Label the heading clearly.

Ahead of F2F lesson: CROSS METHOD (II)

Resource: Playlist

Click HERE to access padlet

Recognising Quadratic Expressions

Click HERE to access the form




Click HERE to view spreadsheet

Cross Factorisation: 1st Attempt

Click HERE

[Formative Quiz] Algebra Factorisation: Cross Method

Resource: You may watch the clips in the following playlist(s) to recap and view more examples before attempting the assigned collection:

• Factorisation (4) Cross Method
• (Playlist) S1 Maths Factorisation (III) Using Cross Method

Click HERE to access padlet

Factorisation by CROSS METHOD

Watch this clip (HERE).
Pay close attention to the sequence of the steps used.

[Formative Quiz] Algebra Factorisation: Special Products

[To be completed by FRIDAY (24 April, evening: So that feedback can be given to you. It would be useful when you do your homework HW6]

Resource: You may watch the clips in the following playlist(s) to recap and view more examples before attempting the assigned collection:

• S1 Maths Algebra - Factorisation (Special Product)

Click HERE to access padlet

Algebra: Factorisation using Special Product A^2 - B^2 = (A + B)(A - B)

We discussed Eg. 2 & Eg. 3 during lesson today's lesson.
READ through the rest of the examples. 
We'll go through the rest (or equivalent type of questions) tomorrow.

Here's the LEVEL 2 examples (e.g. 4 & 4),
- in particular, need to pay attention to the ( ) or [ ]

Factorising (by Grouping & Special Product): Test Your Eye Power

Click HERE to access the Quiz.




Click HERE to see feedback

Watch the explanation shere:

• Question 1 
• Question 2
• Question 3

[Formative Quiz] Algebra - Factorisation by GROUPING

Click HERE to access padlet

Factorisation by GROUPING

Post was first put up on 17 April 2020 for self-directed learning (weekend homework)

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Click HERE to watch the Playlist.

Then try to factorise the following in your NOTEBOOK.

[UPDATED After lesson on 21 April (Tuesday)]
During lesson, we went through 1(a) and 4(a). We did not get the time to go through 2(a) & 3(a).

• Fazila asked if we could re-organise the terms; 
• Sylvester asked whether we could extract "-1" (common factor) from the first factor instead of the second one.

Both are feasible and will end up with the same answer :)

I've provided a written explanation for the questions. 

Read through and check with me if you are still not sure.

Do check this working against your own working, too.

Attempt 2(a) and 3(a). Then check your answer against the one below. 

Read through and check with me if you are still not sure.

Algebra: Factorisation by Common Factors (Class Discussion)

Below is the complete working of the 6 examples we attempted in yesterday and this morning's leson.
You may also refer to the playlists posted in the Google Classroom to go through more examples.

[Formative Quiz] Algebra - Factorisation by Identifying Common Factor (II)

Click HERE to access padlet

[Formative Quiz] Algebra - Factorisation by Identifying Common Factors

Source: Workbook 1A Worksheet 4C Q8

Click HERE to access Padlet