Why did wind Turbines in Texas freeze?

[FACTFUL MATH] Grade level: 4 – 6th grades

Math skills: Subtraction of negative numbers

Related Environmental issues: Renewable Energy

Some wind turbines in Texas froze when extreme cold air from the Arctic brought freezing temperatures around mid-February, 2021. Those wind turbines froze because they were not equipped with anti-icing packages. When equipped, wind turbines can operate up to minus 22 °F.

Dallas, Texas, reached minus 2 °F on February 16. Which temperature is lower and by how many degrees?


-22°F is lower by 20 degrees.

-2 – (-22) = -2 + 22 = 20

Check our new math problems via Instagram @factfulmath.blueggs

Factful Environmental Math Problems (2020)

Available from Amazon  (paperback)

About this book

The objective of Factful Environmental Math Problems is to cultivate our young people’s skills to analyze and evaluate fact-based data for understanding our world, while improving their math skills and critical thinking skills.

With the rise of the Internet and new technology, building skills to analyze and evaluate fact-based data becomes increasingly important for our young people to prepare for this rapidly changing world. These skills minimize their chances of being brainwashed by false information and making uninformed decisions and ultimately help develop their critical thinking skills. (Read more)

Screen Shot 2020-04-02 at 10.20.25 AM
Screen Shot 2020-04-02 at 10.31.32 AM
Screen Shot 2020-04-02 at 10.31.38 AM

Published: March 26, 2020

Price: $6.25