Understanding the Final 7-Day Revision Mindset Final week is NOT for learning new topics Final week is for: consolidating formulas mastering question patterns correcting past mistakes increasing solving speed improving exam stamina Avoid unnecessary theory reading Focus on exam-style practice …
Core Principles of Algebraic Fraction Simplification Algebraic fractions behave like number fractions Simplify numerator and denominator separately Factorise before cancelling Never cancel terms—cancel factors only Identify: common factors quadratic patterns difference of two squares perfect square trinomials common binomial factors …
Knowing Your Calculator: The Core Buttons to Master Know location of fraction button square root cube root power key reciprocal key memory keys Ans and replay keys Scientific notation support EXP or ×10ⁿ key Use replay to edit mistakes without …
Fundamental Relationships Every Student Must Memorise Core formula Distance = speed × time Speed = distance ÷ time Time = distance ÷ speed Use consistent units Convert hours ↔ minutes Convert minutes ↔ seconds Convert km ↔ m when necessary …
Understanding Inequality Symbols With Absolute Clarity Inequality vocabulary < means “less than” ≤ means “less than or equal to” means “greater than” ≥ means “greater than or equal to” Always check the direction of arrows Inequality set notation lines up …
Understanding Core Statistical Measures Mean, median, mode and interquartile range (IQR) measure different aspects of data Mean shows central value based on total sum Median shows middle position Mode shows most frequent value IQR shows spread between Q₁ and Q₃ …
Understanding the Basics of Vector Representation Vectors represent movement, direction and magnitude Written in component form Column vector: (a, b) Horizontal movement = a Vertical movement = b Vector AB defined as (B − A) Negative vector reverses direction Zero …
Key Mensuration Concepts to Master Before Using Formulas Length, area, and volume scale differently Length scaling factor = k Area scaling factor = k² Volume scaling factor = k³ Use correct units Area in cm² or m² Volume in cm³ …
Percentage, Ratio & Proportion Hacks for O Level & IGCSE Maths Written and Compiled By Sir Hunain Zia, World Record Holder With 154 Total A Grades, 7 Distinctions and 11 World Records For Educate A Change O Level & IGCSE …
Understanding Sequences as a High-Frequency Exam Topic Sequences appear repeatedly in Paper 1 and Paper 2/4 Examiners love testing: Recognising patterns Finding next terms Deriving the nth term Using the nth term to find unknowns Arithmetic vs non-arithmetic logic Students …