The Great Friction Battle
Alex
Mission Briefing.
Weave two books together page by page — then try to pull them apart. Sounds easy? Now add water. What changes?
7-12 yrs
15
min
Easy
Stage 2, Stage 3
Designed by Darin Carr (BSc, DipEd)
NESA Accredited Teacher · Chemistry & Physics Specialist · 30+ years in-class teaching
Creator of the LAB™ Learning System
Last updated: June 2026 ·
[Cite this resource ↗]
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The Great Friction Battle
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NESA Accredited Teacher
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High school chemistry & physics specialist 30+ years
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The Crazy Scientist in primary schools — 15 years
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International conference presenter on science education
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Creator of the LAB™ Learning System
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Curriculum aligned: NSW Science & Technology K–6 (2024)
A picture is worth a thousand words — check this out and see if you can spot the science hiding in plain sight.
Mission Equipment
Two softcover books with as many pages as possible (old phone books, catalogues, or magazines work perfectly — the more pages, the better!)
A cup of water
Two strong volunteers!
A towel (for the wet round)
Let’s Investigate
1
Set up the battle
Place the two books facing each other with the pages open wide.
The page edges should point toward each other so the pages can be woven together.
Start by slightly overlapping the open books in the middle.
3
The Dry Challenge
Each volunteer grabs a spine firmly — fingers around the spine, not the pages. On the count of three: PULL!
5
Pull Again!
Grab the spines again. On the count of three: PULL! Compare the effort to the dry round.
Were the wet pages easier or harder to separate?
2
Weave the pages
Begin alternating pages — one from the left book, one from the right — working from the front of the books toward the back.
Take your time. The more pages you interleave, the stronger the effect. Aim for at least 50 pages from each book.
4
The Wet Challenge
Wiggle the books side to side to separate the pages.
Pour a cup of water slowly over the open interleaved pages and push the spines back together. (same number of pages touching)
Allow 10–15 seconds for the water to soak in.
Did it work? Share the science! Tag @the_crazy_scientist on Instagram — we love seeing your experiments!
The Crazy Scientist LAB Learning System™
Every experiment follows The Crazy Scientist Lab Learning System™ — a simple way to help kids think like real scientists.
We
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LINK to what they already know,
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ACTIVATE curiosity through hands-on discovery
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BUILD understanding that actually sticks.
Have you ever slipped on a wet floor? Struggled to hold something with soapy hands? Everyone knows water makes things slippery.
So here's your prediction challenge: if you weave two books together page by page — then pour water on the pages — do you think the wet pages would be EASIER or HARDER to pull apart than the dry ones?
Make your prediction. Then get ready for one of the biggest surprises in science.
No glue. No clips. Just pages — so why couldn't you pull them apart?
Friction is the force that pushes back whenever two surfaces try to slide. One page on another creates almost none. But you had hundreds of pages all touching at once.
Friction stacks. Add up hundreds of tiny forces and you need an enormous force to overcome them all.
Now the wet round.
Water reduces friction on smooth surfaces — tiles, glass, metal. But paper is made of tiny fibres. Water grips into those fibres instead of lubricating them, pulling the pages together through surface tension and capillary adhesion.
On paper, water acts like a weak glue — not a lubricant. That's why wet was harder.
You've just discovered that the same substance — water — does completely opposite things on different surfaces.
On smooth surfaces (glass, tiles, metal): water gets between the surfaces and reduces friction. Things slip.
On fibrous surfaces (paper, fabric, skin): water grips into the material and increases adhesion. Things stick.
Now apply that to a new situation: step out of the shower onto a smooth tile floor — slippery.
Step onto a bath mat — not slippery. Same wet feet. Same water. Why the difference?
"Want the full teacher guide? The Crazy Scientist Lab includes classroom delivery tips, how to manage the WOW moment, differentiation for Stage 2 & 3, — ready to teach tomorrow."
Think Like a Scientist
Scientists don't just do ONE experiment; they change one part of the experiment (independent variable) and then see how it affects another part of the experiment
(dependent variable)
Change ONE variable and test again.
What happens if you weave more pages together — do the books become harder or easier to pull apart?
What if you tried magazines with glossy pages instead of plain paper — does the surface change the result?
🧪 Try it! Change ONE thing and test again. What did you discover?
Dr Puddledrip’s Science Tip
Want to go deeper? Tap a section below to explore. ▼
The Science Behind It
Friction acts between any two surfaces in contact, pushing back against sliding.
One page on another creates almost none — but interleave two books and you've stacked hundreds of surfaces at once. Each adds a little. Together, they add up to an enormous force. No glue, no lock — just friction multiplied.
Wet pages surprise everyone.
Water lubricates smooth surfaces like glass and tiles — but paper is fibrous and porous. Water grips into the fibres instead, pulling pages together through surface tension and capillary adhesion. The wet books are harder to separate, not easier.
Curiosity spark: If water makes fibrous surfaces grip harder, why does soaked paper eventually fall apart? What's happening to those fibres over time?
Want the full explanation — plus how to turn this into a real force investigation with measurements? That's inside The Crazy Scientist Lab.
Teachers & Homeschoolers: Print-ready HD versions of this Science Behind It poster and companion G&T Challenge Card are available inside The Crazy Scientist LAB.
Extension: G&T Years 5 & 6
Teachers & Homeschoolers: Print-ready HD versions of this Science Behind It poster and companion G&T Challenge Card are available inside The Crazy Scientist LAB.
Vocabulary
Know a parent or teacher who'd love this? Send it on! 👇
READY TO TEACH THIS
TOMORROW?
Running the experiment is easy; however, teaching it well is another challenge.
Teachers often ask:
How do I adapt this for Stages 1,2 or 3?
What do I do with fast finishers?
What misconceptions will they have?
How do I structure this for a full class?
What syllabus outcomes does it cover?
What do I say when they ask WHY?
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