# How did I create my divisibility rules foldable?

First, I decided how to word the divisibility rules.  I based my rules off of a poster that I have for free here.  The only thing that I changed was adding a “or 0” to the divisibility rules for 2.  Eventually, I will go back in and change the free posters to show that.

### HERE IS WHAT I CAME UP WITH FOR MY RULES:

• A number is divisible by 2 if the last digit is even [2, 4, 6, 8] or 0.
• A number is divisible by 3 if the (sum of the digits) is divisible by 3.
• A number is divisible by 4 if the (last 2 digits) are divisible by 4.
• A number is divisible by 5 is the last digit is a 5 or a 0.
• A number is divisible by 6 if it is divisible by BOTH 2 and 3.
• NOTE:  I skipped 7
• A number is divisible by 8 if the (last 3 digits) are divisible by 8.
• A number is divisible by 9 if (the sum of the digits) is divisible by 9.
• A number is divisible by 10 if the last digit is 0.

After I listed the rules, it is clear that I need at least 8 sections so that I can show the divisibility rules for 2, 3, 4, 5, 6, 8, 9, and 10. Right away, I knew that I wanted to create a window/flap template, so I started by folding the paper to get sixteen equal sections. Then, I cut the flaps to complete the foldable.

## SEE IT STEP BY STEP:

If you are having your students create a foldable with this template, I suggest having them completely fill out the foldable with the information BEFORE cutting.  I typically have students wait to cut until right before they glue their foldable in their notebook.

## BACK TO THE DIVISIBILITY RULES FOLDABLE:

### HAND WRITTEN ROUGH DRAFT:

NOTE:  I did not cut the rough draft of my foldable until I finished filling it out.  As you can see, I did not cut very carefully.

#### Some Flaps Open / Some Flaps Closed:

I put the rules on the back of the flap and the examples underneath the flap.  I typically put the examples on the inside and the rules/steps on the back of the flap.  There is nothing wrong with flip-flopping the examples and the rules, but I think it is important to keep the entire foldable consistent.

#### Inside:  All Flaps Open:

I made up the examples as I went, making sure to have at least one non-example for each section.

### HAND WRITTEN & COLORED FINAL COPY:

#### Front Cover Flaps:

I thought it would be fun to add some color to my hand written final copy.

#### Some Flaps Open / Some Flaps Closed:

I used colored pencils and flair pens to create this.  I was so nervous that the pens would bleed through.  To my surprise, they didn’t bleed much even though I was just using THIN copy paper.