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Lesson Plan




Divisibility Rules



What are the divisibility rules for 2, 3, 4, 5, 6, 9, and 10?


Grade level

Grade 8


Additional Learning Outcomes

Develop technology skills and computer literacy through the use of the spreadsheet program Excel.



Students will explore Excel and discover rules of divisibility for  the numbers 2, 3, 4, 5, 6, 9, and 10.  First, students will examine multiples of 2 using pencil and paper.  Then students will learn to create a chart in Excel that will allow them to more easily see patterns of numbers and determine rules of divisibility for the numbers listed above.


Lesson type (lab, demo, worksheet, hands-on, other)

Demo, lab


Materials and Equipment

Pencil Paper

White board, chalkboard, dry erase board (any)

Computer with Excel



QCC Standards:


Grade: 8


Number Sense & Numeration; Fractions & Decimals

Topic: Factor, Prime, Multiple, GCF, LCM
Standard: Identifies and applies divisibility, factors, prime factors, greatest common factor, and least common multiple.

Number Sense & Numeration; Fractions & Decimals

Topic: Factor, Multiple, Prime, Composite
Standard: Identifies factors multiples, primes and composites.










Total Duration

Two fifty minute class periods


Technology Connection

Students will use Excel to create a spreadsheet that demonstrates the patterns associated with the divisibility of  2, 3, 4, 5, 6, 9, and 10?


Additional Investigation

Divisibility by Eight

If the last three digits in any integer greater than 1000 is divisible by eight, then is the entire number divisible by 8? Explain why or why not.


Adapted from lesson plan from GLC authored by Kimberly Kirstein

Click here to view original