Are you starting a Number Theory unit? Or wanting a quick refresher of divisibility rules for students? This introductory lesson provides creative opportunities for discovery and investigation of divisibility rules. It helps scaffold students’ understanding of the divisibility tests (for 2, 3, 4, 5, 6, 8, 9 and 10) and provides a firm foundation for using them going forward.

**PLEASE NOTE** This is an optional lesson in my 2-week Number Theory unit. While this will easily work as a stand-alone lesson, if you like the style and content, you can purchase the full 6-lesson unit HERE.

CONTENTS

• Detailed Teacher Lesson Plan: With learning objectives, notes on pre-lesson planning, step-by-step instructions for activities, and even suggestions for delivery.
• Divisibility Rules Reference Sheet: An empty reference sheet for students to record the divisibility rules. There are two options provided for this exercise, with or without space for examples.
• Using Divisibility Rules Worksheet: An engaging and creative exercise in which students apply their knowledge of divisibility rules.
• Slideshow: Divisibility Quick Check - True or False: An attractive slideshow to help test students’ knowledge.

Looking for more Divisibility or Number Theory resources? Check out...

Divisibility Rules POSTER

Divisibility Rules (Missing Digits Worksheets)
Divisibility Rules (MATH MAZE MATCH)

Prime Factorization, GCF & LCM (Number: TEAM CHALLENGE task cards)
Least Common Multiple (MATH MAZE MATCH)
Greatest Common Factor (MATH MAZE MATCH)
SORT & STICK: Factors and Multiples

Prime Factorization (Number Theory) SCAVENGER HUNT
Primes, GCF and LCM - Differentiated Worksheet