Measurement reference

Temperature conversion chart

Keep four exact formulas for Celsius, Fahrenheit and kelvin conversions on one printable page.

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Reference · Letter Reference · A4

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Use the four exact formulas for Celsius, Fahrenheit and kelvin temperatures.

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Reference handout

A4

Reference handout

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Learning objective

What this activity builds

Choose and interpret an exact temperature conversion formula.

Worked example

Which formula converts kelvin to Celsius?

C = K - 273.15

A Celsius degree and a kelvin have the same interval size; their zero points differ by exactly 273.15.

Teaching notes

Make the practice count

Name the input and output scale before selecting a card.
Kelvin uses K without a degree sign.
Offsets make temperature conversion different from a simple unit factor.

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Practice sixteen Fahrenheit/Celsius conversions in either direction or eight of each, with optional formulas and negative-temperature ranges.

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