Celsius
The Celsius scale is a temperature scale that is based on the freezing point of water at 0 degrees and the boiling point of water at 100 degrees under standard atmospheric pressure. It is widely used in most countries around the world as the standard unit for measuring temperature.
To convert a temperature from Fahrenheit to Celsius, you can use the formula: Celsius = (Fahrenheit - 32) * 5/9
Conversely, to convert a temperature from Celsius to Fahrenheit, you can use the formula: Fahrenheit = (Celsius * 9/5) + 32
The Celsius scale is named after the Swedish astronomer Anders Celsius, who first proposed the scale in 1742.
.◂Math Worksheets and Study Guides First Grade. Temperature
Study Guide
Temperature 
Worksheet/Answer key
Temperature Worksheet/Answer key
Temperature Worksheet/Answer key
Temperature
Worksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyThe resources above cover the following skills:
Measurement (NCTM)
Understand measurable attributes of objects and the units, systems, and processes of measurement.
Select an appropriate unit and tool for the attribute being measured.
Apply appropriate techniques, tools, and formulas to determine measurements.
Use tools to measure.