Grade 4 Math PowerPoint: Factors and Multiples (25 Slides)

Lesson Sequence

• Open in PowerPoint and start the slide show. Click to reveal each answer after students respond.
• Read the speaker notes (View > Notes) for questions to ask and common mistakes.
• Use with the lesson plan: it lists which slides belong to each lesson.

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).

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".

Assessment

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

• 25-slide PowerPoint (PPTX, editable)
• Speaker notes on every slide
• Click-to-reveal answers for questions
• Key vocabulary slide with pictures
• Summary slide to finish the lesson

Teacher Reviews