Ancient Greek Diolkos Trackway Friction Roller Lab
An engaging, screen-free learning activity that builds real-world creativity and critical thinking for kids aged 7 to 9.
Materials Needed
- • Heavy hardcover dictionary or textbook (1 book)
- • Round unsharpened wooden pencils or wooden craft dowels (8–10 units)
- • Standard rubber band (1 unit)
- • Metric ruler (1 unit)
Pro Tips
- → Loop a rubber band around a heavy book on a flat table and pull horizontally with a ruler: measure how far the rubber band stretches before the book slides.
- → Place 6 round pencils beneath the book to serve as roller bearings and pull again: the band barely stretches, demonstrating low rolling friction.
- → This mirrors how the ancient Greeks rolled full-sized warships across the Isthmus of Corinth on the Diolkos trackway.
Safety First
Ensure rolling dowels do not drop onto the floor where they could cause slip hazards.
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Step-by-Step Instructions
Step 1
Loop a rubber band around the spine of a heavy hardcover book resting flat on a table.
Step 2
Pull the rubber band horizontally with a ruler, measuring how many centimeters it stretches before the book slides (sliding friction).
Step 3
Lay 6 round wooden pencils parallel on the table and rest the heavy book on top of them like a wheeled carriage.
Step 4
Pull the rubber band again: observe the dramatically reduced stretch, showing how rolling friction reduces pulling force.