Prime And Composite Numbers — Interactive Lesson (Ages 9–11)

Help KS2 pupils distinguish between prime and composite numbers through engaging activities. Aligned to KS2 National Curriculum objectives for number, this resource develops pupils’ understanding of prime and composite numbers, their properties and their use in factorisation.

Mastering prime and composite numbers with Our KS2 Maths Interactive Lesson & Number Activities

The National Curriculum for KS2 Maths requires pupils to develop fluency, mathematical reasoning and problem-solving skills in prime and composite numbers. This resource provides structured, engaging activities that build confidence and deep understanding.

What’s Inside This prime and composite numbers Resource

• Interactive lesson slides on prime and composite numbers
• Identifying prime numbers using the Sieve of Eratosthenes
• Factor-based reasoning and classification activities
• Reasoning about number properties
• Printable worksheet and quiz slides

Key Benefits for Students

• Builds secure understanding of prime and composite numbers
• Develops factor reasoning and number classification
• Encourages systematic thinking about number properties
• Supports progression to prime factorisation

Why Teachers Love It

• Curriculum-aligned to KS2 number objectives
• Works across upper KS2 number units
• Engaging classification activities make concepts clear
• Digital format for whole-class or independent learning

Ready to build fluency and confidence in prime and composite numbers? Download this KS2 Maths resource today for instant classroom impact. Click ‘Add to Cart’ for immediate access.

Designed for ages 9–11 (UK Year 5–6 / US 4th Grade–5th Grade). Aligned to the UK National Curriculum; adaptable to US state standards.