(T3W10) Learning Tasks - Algebra (Factorisation using Cross Method)

While there's no formal Maths lessons this week, we shall continue to finish up the topic, Algebraic Factorisation - using cross method.

Refer to Worksheet 7: We have completed Part 1 (Classwork 1) this topic in Term 3 Week 9.

Put up in this Maths blog are the learning activities that you shall complete by this week (2 September 2011), before the vacation starts.

Please follow the following sequence:

1. Part 1: Factorisation of Quadratic Expressions of the form ax2 + bx + c where a = 1
   
• View the following video clips (Take note of the procedure):
• (T3W10) Algebra: Factorisation (cross method, Example 1) x^2 + bx + c 
• (T3W10) Algebra: Factorisation (cross method, Example 2) x^2 - bx + c
• (T3W10) Algebra: Factorisation (cross method, Example 3) x^2 + bx - c
• (T3W10) Algebra: Factorisation (cross method, Example 4) x^2 - bx - c
• Attempt Classwork 1 on the worksheet (p4 & p5)
• Enter your answers in the GoogleForm: (T3W10) Worksheet 7 Classwork 1. Your answers will be marked automatically.
2. Part 2: Factorisation of Quadratic Expressions of the form ax2 + bx + c where a is not equal 1
• View the following video clips (Take note of the procedure):
• (T3W10) Algebra: Factorisation (cross method, Example 5) ax^2 + bx + c 
• (T3W10) Algebra: Factorisation (cross method, Example 6) ax^2 - bx + c 
• (T3W10) Algebra: Factorisation (cross method, example 7) ax^2 - bx - c
• Attempt Classwork 2 on the worksheet (p7)
• Enter your asnwers in the GoogleForm: (T3W10) Worksheet 7 Classwork 2. Your answers will be marked automatically.
3. Part 3: Factorisation of Quadratic Expressions involving more than one variable
• Read the working presentation of Examples 5 & 6 (p8)
• Attempt Claswork 3 on the worksheet (p9).
• Enter your answers into the GoogleForm: (T3W10) Worksheet 7 Classwork 3. Your Answers will be marked automatically.
4. Attempt Challenge Yourself (p10 & p11).
• Q5: Typoerror - it should be
• (a) 2(a+2b)2 - 13(a+2b) + 15
• (b) 6(a+2b)2 - 39(a+2b) + 45
• Click HERE to check Answers
5. Your may refer to other resources (as highlighted in p11 of Worksheet 7)
• Sec 2 Textbook 2A Chapter 2 [Exercise 2.4]
• BBC Bitesize Factorising Quadratic Equations
• Youtube clip: Fast Factoring
• This 'shortcut' method does not use 'cross method' - it's pure memorising of steps. You might not want to consider.
• Khan Academy: Factoring Quadratic Expressions
• Factorisation Game at Quia: Factoring
6. AceLearning Portal: Attempt Online Quiz S1 Algebra Worksheet 7 Quiz (20 questions)
7. Just for Fun: Teach Me How To Factor (WSHS Math Rap Song)