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The Floss Rule for Spelling

Have you ever wondered why some words have a double consonant at the end (such as sniff), while other words do not (such as dog and bat)?

The answer is easy–and we call it The Floss Rule. It’s a really simple spelling rule that helps kids remember when to use a double consonant at the end of a word.

Check out this handy rule in the video below, and then read on for free printable spelling rule posters and a sample lesson!

Why Do We Call It “The Floss Rule”?

The rule states that if a word has only one vowel and ends in F, L, or S, double the last letter.

The word floss is a perfect example of this rule, and it also contains the letters f, l, and s! That makes “The Floss Rule” a pretty handy name, doesn’t it?

infographic showing the floss rule for spelling

More tips and tricks like this one are taught throughout the All About Spelling program. Want to see more? Download these two free resources to see just how easy teaching spelling rules can be.

Download All About Spelling Level 1, Step 18.
This lesson shows how we teach doubling a consonant at the end of one-syllable words.

pdf-icon-transparent-background2-small-p3

Download our free Spelling Rules Posters.
This handy resource will help make learning three important spelling rules easy and fun to remember for your children.

Has the Floss Rule helped your child? I would love to hear about it in the comments below! And check out our other spelling rules, too!

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Jessica

says:

We’re just now getting to this and I’m amazed at how well my son can already spell and read! This is such a great program…I’ve even learned a thing or two from this :)

Robin E.

says: Customer Service

Glad to hear it is going so well for you and your son, Jessica! Keep up the great work!

Angela

says:

This rule has been so helpful for my son AND me! Thanks for making spelling fun!

Robin E.

says: Customer Service

You’re welcome, Angela! Glad to know this rule is helpful.

Dawn

says:

What a great way to remember this rule and such a helpful poster! Thank-You!

Robin E.

says: Customer Service

You’re welcome, Dawn!

Amanda Dunville

says:

I love this! This is the level of spelling my son is at and what an easy rule to explain to him to help him succeed.

Rebecca Baertlein

says:

I knew this rule but never noticed this fun way to remember it!

Robin E.

says: Customer Service

Rebecca,
It is helpful to make rules easy to remember!

Brandy

says:

Thank you for sharing such good tips and rules

Robin E.

says: Customer Service

You are so welcome, Brandy!

YaadStyle Homeschooling

says:

Great explanation. Thank you for the poster as well. Great video. Thank you so much.

Robin E.

says: Customer Service

You’re welcome!

Cassie

says:

Good to know!

Bobbie-Jo Saylor

says:

The Floss Rule has been great for my 2nd Grader! We printed off the posters and it has really helped!

Robin E.

says: Customer Service

I’m so glad to hear that the posters were helpful, Bobbie-Jo!

Kristin Tucker

says:

This is really helpful! Thank you. 🥰

Lynn

says:

Key words are a great way for children to remember spelling rules!

Candy

says:

What a great concept! All About Learning is great!

Robin E.

says: Customer Service

Awww, thank you, Candy!

Jenny Beth Penrod

says:

The little extras are what make All About Learning great!

Beth

says:

I love these fun posters! All About Reading has been the key to success for my dyslexic son. I’m excited to start All About Spelling with him soon!

Robin E.

says: Customer Service

It’s great that All About Reading is working well for your son, Beth!

Lori Mahan

says:

I have never heard of the floss rule. Love it. I need the spelling to help cloase the gaps. Wish I could get my school to purchase this to help us. Main stream publishers don’t do enough spelling, grammar, or writing.

Jess

says:

That’s so clever. Thanks!

Kasey Gagnon

says:

Helpful resource. Thank you.

Jennifer Herrin

says:

Thank you!

J

says:

Love these posters!

Anne Perry

says:

Great tips!! I will share this video with my son.

Brianna

says:

Thanks for the intro to All About Reading! Brianna

Shannon

says:

Thank you

Lauren

says:

Glad I found this! Thank you:)

Joy

says:

Looking forward to trying this out

Carrie Smith

says:

Very informative

Emily Cargile

says:

I knew this rule, but I didn’t know this was the name for it! :)

Robin E.

says: Customer Service

Glad to help you learn something, Emily!

R N

says:

Love that I can learn handy rules like this with my kids!

Kristen Hale

says:

Wow this is really cool I’ve never heard this rule before! I’m learning something new too ☺️

Robin E.

says: Customer Service

Glad to help you learn something new, Kristen!

Ashley

says:

I can’t wait to start this curriculum with my son!