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1 WORK PROGRAM Chapter 2 Introductory algebra Cluster: Pre-algebra and Algebra Section Are you ready? (page 60) Using pronumerals (page 61) WE 1a–d, 2a–b, 3a–d Ex 2A Using pronumerals (page 64) Suggested time: 3 weeks GC tips, Investigations, Rich tasks, History of mathematics, Maths Quest challenge, 10 Quick Questions, Code puzzles SkillSHEETs, WorkSHEETs, Interactive games, Test yourself, Topic tests (CD-ROM) Technology applications (CD-ROM) SkillSHEETs (page 60) 2.1: Alternative expressions used to describe the four operations 2.2: Algebraic expressions 2.3: Like terms 2.4: Simplifying like terms 2.7: Multiplying algebraic terms 2.8: Dividing algebraic terms 2.14: Substitution into algebraic expressions SkillSHEET 2.1: Alternative Mathcad: Displaying the expressions used to coefficients (DIY) describe the four (page 64) operations (page 64) SkillSHEET 2.2: Algebraic expressions (page 64) Learning outcomes A 18b.5 Understand symbols Uses a letter to represent a variable quantity in an oral or written expression and for linking successive terms in a sequence involving one or two operations. A 18b.5 Understand symbols Uses a letter to represent a variable quantity in an oral or written expression and for linking successive terms in a sequence involving one or two operations. 2 Worded questions (page 65) WE 4a–c, 5a–c Ex 2B Worded questions (page 67) Maths Quest challenge: Q1–3 (page 69) WorkSHEET 2.1 (page 69) Like terms (page 70) WE 6a–d, 7a–d, 8a–c Ex 2C Like terms (page 72) Investigation: Algebra rectangles (page 73) Code puzzle (page 74) 10 Quick Questions 1 (page 75) SkillSHEET 2.3: Like terms (page 72) SkillSHEET 2.4: Simplifying like terms (page 72) SkillSHEET 2.5: Addition and subtraction of integers (page 72) Mathcad: Collecting like terms (page 27) A 18b.5 Understand symbols Uses a letter to represent a variable quantity in an oral or written expression and for linking successive terms in a sequence involving one or two operations. A 18b.6 Understand symbols Uses and interprets basic algebraic conventions for representing situations involving a variable quantity. A 18b.5 Understand symbols Uses a letter to represent a variable quantity in an oral or written expression and for linking successive terms in a sequence involving one or two operations. A 18b.6 Understand symbols Uses and interprets basic algebraic conventions for representing situations involving a variable quantity. WM 3.5 Mathematical strategies Extends tasks by asking further mathematical questions and uses problem-solving strategies that include those based on developing systematic approaches. WM 5.5 Reason mathematically Draws on mathematical knowledge to give reasons for conjectures before testing them, and refines and modifies conjectures as a result of testing. 3 Multiplication and division Maths Quest challenge: (page 75) Q1–2 (page 78) WE 9a–d, 10a–d Code puzzle (page 79) Ex 2D Multiplication and division (page 78) Algebraic fractions (page 80) WE 11a–c, 12a–c, 13a–b, 14a–b, 15a–c, 16a–c Ex 2E Algebraic fractions (page 85) 10 Quick Questions 2 (page 87) SkillSHEET 2.6: Multiplication and division of integers (page 78) SkillSHEET 2.7: Multiplying algebraic terms (page 78) SkillSHEET 2.8: Dividing algebraic terms (page 78) WorkSHEET 2.2 (page 78) SkillSHEET 2.9: Finding and converting to the lowest common denominator (page 85) SkillSHEET 2.10: Adding and subtracting fractions (page 85) SkillSHEET 2.11: Multiplication of fractions (page 85) SkillSHEET 2.12: Division of fractions (page 86) Game time 001 (page 87) Mathcad: Multiplication and division (page 78) Mathcad: Algebraic fractions (page 85) Mathcad: Multiplying and dividing algebraic fractions (page 86) A 18b.5 Understand symbols Uses a letter to represent a variable quantity in an oral or written expression and for linking successive terms in a sequence involving one or two operations. A 18b.6 Understand symbols Uses and interprets basic algebraic conventions for representing situations involving a variable quantity. A 18b.5 Understand symbols Uses a letter to represent a variable quantity in an oral or written expression and for linking successive terms in a sequence involving one or two operations. A 18b.6 Understand symbols Uses and interprets basic algebraic conventions for representing situations involving a variable quantity. 4 Substitution and formulas (page 88) WE 17a–c, 18a–c, 19 Ex 2F Substitution and formulas (page 90) Summary (page 96) Chapter review (page 97) Investigation: Good health (page 92) Rich task: Steps and stairs (page 93) History of mathematics: Heron (c. 100 AD) and Brahmagupta (598–668 AD) (page 95) SkillSHEET 2.13: Order of operations (page 90) SkillSHEET 2.14: Substitution into algebraic expressions (page 90) Game time 002 (page 91) WorkSHEET 2.3 (page 91) ‘Test yourself’ multiple choice questions (page 98) Topic tests (2) Excel: Substitution (page 90) Mathcad: Substitution (page 90) Excel: Substitution game (page 90) A 18b.6 Understand symbols Uses and interprets basic algebraic conventions for representing situations involving a variable quantity. WM 3.5 Mathematical strategies Extends tasks by asking further mathematical questions and uses problem-solving strategies that include those based on developing systematic approaches. WM 4.5 Apply and verify Checks working and reasoning and whether answers fit specifications and make sense in the original situation. AM 2.5 Contextualise mathematics Describes how some familiar mathematical ideas are, or have been, used by people to represent, describe and explain their world.