Grade 4 Math Lesson Plan: Factors and Multiples

Learning Objectives

• Find all the factor pairs of a whole number from 1 to 100 using arrays and multiplication facts.
• List the multiples of a number and decide if a number is a multiple of another.
• Find common factors and common multiples of two numbers.
• Decide if a number is prime or composite and explain why (1 is neither).

Lesson Procedure

• Read the overview and success criteria before teaching.
• Lesson 1 — Factors and factor pairs (50 min): follow the stage table (warm-up, teach, practice, exit ticket).
• Lesson 2 — Multiples and common multiples (50 min): follow the stage table (warm-up, teach, practice, exit ticket).
• Lesson 3 — Prime and composite numbers (50 min): follow the stage table (warm-up, teach, practice, exit ticket).
• Use the matching PowerPoint, worksheet and assessment from this pack — the plan refers to their slide and part numbers.

Differentiation

Support: Use tiles or grid paper for every factor question. Challenge: Find a number with exactly 3 factors (square numbers of primes: 4, 9, 25, 49). English language learners: Teach "factor" and "multiple" with gestures: factors are the "building blocks", multiples are the "times-table jumps".

Teacher Tips

Keep a hundred chart on every desk for this unit. Arrays make factors visible: if you can make a rectangle with r rows, r is a factor.

What's Included

• 4-page lesson plan (PDF + editable DOCX)
• Lesson 1 — Factors and factor pairs (50 min)
• Lesson 2 — Multiples and common multiples (50 min)
• Lesson 3 — Prime and composite numbers (50 min)
• Key vocabulary table, materials list and success criteria
• Differentiation (support, challenge, English language learners)
• Common misconceptions with fixes, and teacher tips

Additional Files

• Grade 4 Math Lesson Plan: Factors and Multiples (DOCX)

Teacher Reviews