Why is ice slippery?

Flipped lesson plan (B2 and above): Why is ice slippery? - BUY ME A COFFEE if you like my FREE ESL content


Learn why it is so hard to walk on ice without falling over. 

In this worksheet, students will watch a video about the science of slipperiness, learn ice-related idioms and read an article about Frederic Tudor, the intrepid American entrepreneur who created a global market for ice in the 1800s.

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Lesson activities:

Discuss one of Robert Frost's most famous poems, 'Fire and Ice'

Watch a video explaining the reason for ice's slipperiness, using scientific vocabulary (friction, megapascals, pressure, hydrogen bonds)

Learn idioms/phrases related to ice (frosty reception, when hell freezes over, (someone) could sell ice to an Eskimo, to be on thin ice)

Study a text from The Atlantic about the stubborn American entrepreneur who defied naysayers and made huge money shipping ice from Massachusetts to tropical regions in the 1800s (advanced vocabulary: trickle down, extravagant, pigheadedness, to be swindled by, slush, perishable)

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