Grades K–2 · Brushing & flossing
Flossing Fun
Brushes can't reach everywhere! Learn the floss hug — a gentle C-shape between teeth, once a day, with a grown-up's help.
What you'll learn
- Students will state that flossing happens once a day.
- Students will explain that floss cleans between teeth, where toothbrush bristles cannot reach.
- Students will demonstrate the C-shape floss hug on a model, pretend teeth, or with finger motions.
- Students will identify that a grown-up helps with flossing until kids are ready to do it themselves.
Your toothbrush is a superhero — but even superheroes can’t reach everywhere. Between your teeth there are tight little spots where food and sugar bugs (the sticky film grown-ups call plaque) love to hide. That’s a job for a helper string: floss!
The floss hug
- A grown-up breaks off a piece of floss and holds it tight between their fingers.
- Slide it gently between two teeth. Gentle is the rule — no snapping!
- Curve it into a C shape, like the floss is giving your tooth a hug.
- Slide the hug up and down so the hiding spots get clean, then move to the next tooth.
- Every tooth gets a hug — even the ones way in the back.
Flossing happens once a day. Lots of families do it at bedtime, so sugar bugs don’t get a sleepover.
Whose job is it?
Flossing takes tricky finger moves, so a grown-up does it or helps while you’re learning — and that’s exactly how it should be. Your job is to open wide, hold still, and count the tooth hugs. One day your hands will be ready to take over the whole job!
Show what you know in the quiz below — then go give your teeth a hug tonight.
Print & go
Printables for this lesson
The educator plan includes objectives, standards, the step-by-step lesson, and a paper pre/post knowledge check with answer key. The family sheet is bilingual — English and Español on one page.
Standards alignment
Sources
Every health claim in this lesson comes from a primary source and is clinically reviewed before publication.
- Source: ADA MouthHealthy — Flossingaccessed 2026-07-28
- Source: American Dental Association — Dental Floss/Interdental Cleaners (Oral Health Topics)accessed 2026-07-28
Licensed CC BY-NC-SA 4.0 — free for schools and families to use, share, and adapt with credit (non-commercial, share-alike).
Healthy Smiles. Brighter Futures. · atomicsmile.org/learn
Flossing Fun — Educator Lesson Plan
Learning objectives
- Students will state that flossing happens once a day.
- Students will explain that floss cleans between teeth, where toothbrush bristles cannot reach.
- Students will demonstrate the C-shape floss hug on a model, pretend teeth, or with finger motions.
- Students will identify that a grown-up helps with flossing until kids are ready to do it themselves.
Standards alignment (NHES)
- NHES 1.2.1 — Identify that healthy behaviors impact personal health. (Standard 1, Pre-K–Grade 2, NHES 2nd ed., 2007)
- NHES 7.2.1 — Demonstrate healthy practices and behaviors to maintain or improve personal health. (Standard 7, Pre-K–Grade 2, NHES 2nd ed., 2007)
Materials
- Dental floss, or yarn for practicing the motions with big pretend teeth
- A tooth model, an egg carton turned upside down, or interlocked fingers as pretend teeth
- Printed pre/post knowledge checks from this packet (one per student, used twice)
- Optional — a comb and a cotton ball, to show how bristles skip the gaps
Procedure
- Pre-check (5 min): hand out the paper knowledge check, read each question aloud, and collect it. Keep the stack — you will compare it with the post-check.
- Warm-up (3 min): hold up a comb with a cotton ball stuck between two rows of teeth — er, comb teeth. Can a brush get it out? Some spots need a helper string!
- Demonstrate (4 min): show the floss hug on the model or egg carton — slide the floss gently between two teeth, curve it into a C like a hug, and slide it up and down.
- Practice (4 min): students practice the C-hug motion with yarn on pretend teeth (or in the air, hugging one finger with yarn).
- Wrap-up (2 min): when do we floss? Once a day! Who helps? A grown-up, until your hands are ready.
- Post-check (5 min): hand out the same knowledge check again. Compare class totals with the pre-check to see the learning — and celebrate it.
Knowledge check — photocopy this page
Give the same check before and after the lesson; class totals before vs. after give you a measurable outcome for reports and grants.
Name: ____________________________ Date: ______________ ☐ Before the lesson ☐ After the lesson
- How often should teeth get flossed?
- Once a week
- Once a day
- Only on birthdays
- Where does floss clean?
- Between teeth, where the brush can’t reach
- Your hair
- Only the front of your teeth
- What shape does the floss make around a tooth?
- A square
- A zigzag
- A C shape, like a hug
- How should floss move between teeth?
- Fast and snappy
- Gently, sliding up and down
- It shouldn’t move at all
- Who flosses a kid’s teeth while they’re learning?
- A grown-up does it or helps
- Nobody — skip it
- A robot
Answer key — teacher page
1. b · 2. a · 3. c · 4. b · 5. a
Sources
- ADA MouthHealthy — Flossing — https://www.mouthhealthy.org/all-topics-a-z/flossing (accessed 2026-07-28)
- American Dental Association — Dental Floss/Interdental Cleaners (Oral Health Topics) — https://www.ada.org/resources/ada-library/oral-health-topics/floss (accessed 2026-07-28)
Healthy Smiles. Brighter Futures. · atomicsmile.org/learn
Flossing Fun
Tonight's healthy habit
Floss once a day — it cleans the tight spots between teeth where the toothbrush cannot reach. Kids need a grown-up to do it or help for years; gently curve the floss into a C shape and hug each tooth.
Try it tonight
Tonight, let your child watch you floss and count your 'tooth hugs' out loud. Then help them floss their own teeth — one gentle C-hug per tooth. A silly hug sound for every tooth makes it a game!
El hábito saludable de hoy
Usen el hilo dental una vez al día — limpia los espacios apretados entre los dientes donde el cepillo no llega. Los niños necesitan que una persona grande lo haga o los ayude por varios años; doble el hilo en forma de C y abrace cada diente con cuidado.
Pruébalo esta noche
Esta noche, deje que su hijo o hija le vea usar el hilo dental y cuenten en voz alta los "abrazos de dientes". Después ayúdele a pasar el hilo por sus propios dientes — un abrazo en C, con cuidado, por cada diente. ¡Un sonido chistoso por cada abrazo lo vuelve un juego!
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