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Teach students to identify and explain prime and composite numbers with this complete teaching bundle. Students build arrays to find every factor pair, classify numbers as prime or composite, explain why 1 is neither, sieve a hundred chart to find the prime numbers to 100 and test larger numbers by division.

Combining a lesson plan, a 46-slide editable teacher presentation, three differentiated student activities, an exit ticket with interpretation guide and a hands-on board game, this curriculum-aligned bundle provides everything you need to teach the lesson from start to finish.

Built around the I Do, We Do, You Do model, students move from explicit teacher modelling to guided practice and independent application. They draw arrays on dot grids, list factors in pairs so none are missed, look for patterns in the prime numbers on a hundred chart and justify each classification using mathematical language.

What's included in this teaching bundle?

Teacher Slides (PowerPoint)

• 46 editable, ready-to-teach slides following the I Do, We Do, You Do structure
• Clear learning intention and success criteria
• Review of factor pairs and arrays
• Modelled examples defining prime and composite numbers and explaining why 1 is neither
• A hundred chart sieve to find all 25 prime numbers to 100, with patterns to discuss
• Testing numbers by division with 2, 3, 5 and 7
• Every question slide followed by an answer slide
• Mini whiteboard check-ins throughout

Lesson Plan and Exit Ticket (PDF)

• Complete I Do, We Do, You Do lesson plan for a 45 to 60 minute lesson
• Diagnostic, formative and summative assessment points
• Key vocabulary, teacher notes and common misconceptions
• Exit ticket (two per page) with an interpretation guide

Differentiated Student Activities (PDF)

• Activity overview to help you match each option to your students
• Three differentiated activities: Arrays and Factors, Testing for Prime Numbers and Prime Number Investigations
• Dot grids for drawing the arrays of a number, with long arrays recorded as factor pairs
• Factor listing, sorting and hundred chart colouring tasks
• Investigations into prime patterns, composite numbers with a set number of factor pairs and a student-designed strategy for classifying any number
• Answer key and marking guide for every activity

Class Recording Sheet (Excel)

• Type T, A or B and the cell colours itself: Working towards, Achieving, Working beyond
• Exit ticket results and activity evidence tabs, with numbered next teaching steps

Hands-On Activity: Prime and Composite Squares (PDF)

• Game board on a hundred chart, where players draw lines to claim squares
• Rules page with a Prime or Composite spinner and a "Prove it" step for every move
• Teacher page with set-up, a model round, differentiation and misconceptions
• Answer chart showing every prime and composite number to 100
• What you need: paper, 2 coloured pencils, and a paper clip and pencil for the spinner

Ideal for upper primary classrooms, this bundle provides a structured approach to prime and composite numbers, combining explicit instruction, visual representations, differentiated independent practice and an engaging hands-on game.

Formats: PowerPoint, PDF and Excel

Aligned to Australian Curriculum: Identify and describe the properties of prime, composite and square numbers and use these properties to solve problems and simplify calculations (AC9M6N02)

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