/ FAQS / Problem-Solving Heuristics
Q

What Problem-Solving Heuristics are taught in Primary 4?

A
Primary 4 reinforces all heuristics taught in Primary 1–3 while introducing additional relationships and problem-solving concepts.
Relationships
  • More Than / Less Than (P1)
  • Times as Many (P2)
  • Equal Stage (P3)
  • Equal Stage Before (P3)
  • Equal Stage Change (P4)
  • Equal Stage After (P4)
  • Fraction to Units (P4)
  • Decimal to Units (P4)

Techniques
  • Model (P1)
  • Model Part-Whole (P1)
  • Model Comparison (P1)
  • Model Times-as-Many (P2)
  • Model Stacking (P3)

Problem-Solving Concepts
  • Repeated Identity (P2)
  • Working Backwards (P2)
  • Intervals (P2)
  • Sets (P2)
  • Systematic Listing (P2)
  • Number × Value (P3)
  • Unchanged Quantity (P3)
  • Unchanged Total (P3)
  • Unchanged Difference (P3)
  • Internal Transfer (P3)
  • Proportion (P3)
  • Proportional Exchange (P3)
  • Redistribute (P3)
  • Guess & Check (P3)
  • Make Supposition (P3)
  • Combined Repeated Identity (P4)
  • Remainder Concept (P4)
  • Branching (P4)
  • Common Numerator (P4)
  • Gap & Difference (P4)
  • All Change (P4)
  • Double If (P4)

Finding One Unit
  • Units Method (P1)
  • Units & Parts (P1)
  • Substitution (P1)
  • Units Method (P2)
  • Elimination (P3)
  • Units & Parts & Boxes (P3)

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