MATH Scholastic MATH puts a new spin on learning math with real-world examples, skill-building exercises, puzzles, comic strips, and more!
A farmer in Missouri walks through one of his fields, destroyed after two consecutive years of drought. (Julie Denesha / The Washington Post / AP Photo)

# Climate Chaos | MATH

## How do you contribute to climate change, and what can you do to help slow it?

Last year was the warmest year ever recorded in the U.S. According to the National Oceanic and Atmospheric Administration, the average temperature in the lower 48 states was 55.3°F in 2012. That’s 3.2°F above the 20th-century average, and 1.0°F above the previous warmest year on record, 1998.

Scientists say that Earth’s average temperature is rising because of increasing greenhouse gases. These gases occur naturally and are important to Earth. But the burning of fossil fuels such as coal, natural gas, and oil raises greenhouse gases like carbon dioxide to dangerous levels.

When too much of these gases enter the atmosphere, they act like a blanket, trapping heat. This makes the planet’s atmosphere and oceans hotter, which then causes ice at Earth’s poles to melt. Scientists warn that some coastal cities and towns may someday be underwater because of rising seas.

Warmer oceans can also lead to more extreme storms. Last year was the second-worst year on record (after 1998) for so-called extreme weather. Extreme weather includes hurricanes and tornadoes. In 2012, there were 11 natural disasters accounting for more than \$1 billion in damage, including Superstorm Sandy, which hit the East Coast, and Hurricane Isaac, which hit the northern Gulf Coast.

Scientists use the term carbon footprint to describe the amount of greenhouse gas emissions that each of us is responsible for based on our activities. Your carbon footprint is a measure of daily greenhouse gas emissions in units of carbon dioxide (CO2).

Once you know your carbon footprint, you can identify ways to make it smaller. “Personal choices you make can help reduce your carbon footprint,” says Laura Foster, a scientist at Johns Hopkins University in Baltimore, Maryland, “like turning off the lights, or walking places instead of getting a ride.”

WHAT TO DO

Answer these questions to see how a person’s or country’s carbon footprint can fluctuate.

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# Grade 5 Math Skill-Builder Set

Hand-picked by our expert editors, these teacher-tested, grade-specific five-book sets provide you with reproducible classroom resources that build essential reading skills and keep students engaged.

All five of these great Scholastic Teacher Titles are included in your Grade 5 Math Skill Builder Set!

25 Common Core Math Lessons for the Interactive Whiteboard - Math lessons become more fun and engaging with animated PowerPoint lessons that teach key skills using easy-to-follow steps and repeated practice!

Wee-by-Week Math Review for the Digital Classroom - Help students retain the math skills and concepts they have learning with these quick, ready-made animated PowerPoint slideshow reviews.

100 Math Practice Pages - Reinforce grade-level, standards-based math skills with this collection of 100 eye-catching, reproducible practice pages.

Morning Jumpstarts Math - Fifty, two-page activities that follow a routine and jumpstart skills in place value, computation and fluency, word problems, and more. Great for test prep and to meet the CCSS!

Math Provlem-Solving Packets - Step-by-step mini-lessons encourage students to think about how to analyze a problem and figure out the correct answer!

\$67.97 You save: 30%
Teaching Resources | Grade 5

Grade 5 Math Skill-Builder Set
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# 50 Fill-in Math Word Problems: Fractions & Decimals

by Bob Krech;Joan Novelli

These “mad lib”-style worksheets are instant math motivators! Each hilarious fill-in story gives kids a fun way to practice solving word problems. Skill topics correlate to the NCTM standards and include identifying and comparing fractions; addition, subtraction, multiplication, and division with fractions; identifying and comparing decimals; and addition, subtraction, multiplication, and division with decimals. Perfect for partner and small-group learning, day starters, or homework.

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Teaching Resources | Grades 4-6

50 Fill-in Math Word Problems: Fractions & Decimals