Low friction: Skis on snow, Surfboard on water, Dolphin swimming in water, Ice skates on ice, Bowling ball rolling in the alley, High friction: Tyres gripping road, Rock climbing, Running in sand, Striking a match, Stopping your bike with its brake,

Friction card sort

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Tauler de classificació

Estil visual

Opcions

Canvia de fonament

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