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# Temp Work

## How has Earth’s temperature changed over time?

How has Earth’s temperature changed over time? Scientists say there’s a difference between weather and climate. Even if a given month is cooler than average, the long-term trend shows that Earth has gotten warmer over the past century.

In this lesson, students use positive and negative integers to compare recorded monthly temperatures to their long-term averages and consider actions they can take to take care of the planet.

### REAL WORLD TAKEAWAYS

• In recent years, monthly temperatures have been higher than the long-term average.
• Humans have the power to slow global warming by reducing their CO2 emissions.
• Five high-impact changes recommended by scientists are: (1) eat a plant-based diet, (2) avoid flying, (3) do not own a personal car, (4) use only renewable energy to fuel your home, (5) have fewer children.

### MATH OBJECTIVES

• Operate with decimals and compare values
• Use positive and negative numbers to describe how values differ from a baseline in a real-world context
• Plot positive and negative values on a vertical number line

Appropriate most times as students are developing conceptual understanding.