Without Panic Maths · Number 23
Prime Numbers
Prime, composite and neither, testing for primes and quick clues
- Mini-lessons
- 9
- Questions
- 120
- Student Pack
- 86 pages
- Suggested year
- Year 7
What you get
- Student Pack (PDF, 86 pages)
- Teacher Pack (PDF) with every answer and reteach cards
- Print as many copies as you need for your own pupils
Save with a bundle
- Factors, Primes & Powers6 packs ·
£21£19 - Number, Year 722 packs ·
£73.50£65 - Number: complete strand54 packs ·
£182£161
What this pack does
What pupils learn
A prime number has exactly two factors: 1 and itself. A composite number has more. The number 1 is neither. Decide by finding factors, not by how a number looks.
The mini-lessons
- Prime means exactly two factors
- Composite numbers have extra factors
- Why 1 is neither prime nor composite
- The first prime numbers
- Testing whether a number is prime
- Odd numbers are not always prime
- Quick clues that a number is composite
- Mistake Detective - prime, composite or neither?
- Reasoning with prime numbers
Inside every pack
What each part of the page is for
Confidence check
Pupils tick how a topic feels before they start, and again at the end. There are no marks, so it's an honest picture of where they are.
Short mini-lessons
Each topic is split into small steps. Every mini-lesson opens with one big idea and a short, plain-English explanation.
Visuals for every idea
Diagrams such as a formula 'rule machine' or a place-value picture show the maths, so pupils can see it as well as read it.
Worked examples
Every method is modelled step by step before pupils try it, with each stage labelled so they can follow it on their own.
Scaffolded practice
Questions start with prompts (what do you need to find, follow the example, check it makes sense) and gradually ask for more independence.
Spot the trap
Common mistakes are named before pupils make them, and Mistake Detective questions ask them to find and fix errors.
Pause and think
Short 'explain it in your own words' prompts check that pupils understand why the maths works, not just how.
Teacher Pack with answers
Every pack comes with a Teacher Pack: all the answers, plus reteach cards saying what to watch for, what to say, and what to try if a pupil is still stuck.
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