Exploring Illustrative Mathematics Grade 6 Unit 7 Lesson 1

The video tutorial covers positive and negative numbers, using weather and elevation examples to illustrate concepts. It includes activities on temperature changes and elevations, emphasizing the use of number lines. The lesson concludes with a summary and homework instructions.

What is the main focus of Math 6 Unit 7 Lesson 1?

• Geometry

• Multiplication and division

• Positive and negative numbers

• Addition and subtraction

If the temperature at noon is 5 degrees Celsius and it rises by 6 degrees by late afternoon, what is the new temperature?

• 12 degrees Celsius

• 11 degrees Celsius

• 13 degrees Celsius

• 10 degrees Celsius

At midnight, the temperature is 8 degrees Celsius. By dawn, it drops by 12 degrees. What is the temperature at dawn?

• -4 degrees Celsius

• -2 degrees Celsius

• 0 degrees Celsius

• 4 degrees Celsius

What happens to the freezing temperature of water when salt is added?

• It remains the same

• It increases

• It fluctuates

• It decreases

What does an elevation of zero represent?

• Underground

• Sea level

• Valley

• Mountain peak

Which city has the second highest elevation among the listed cities?

• Death Valley, California

• Bethel, Indiana

• Denver, Colorado

• Coachella, California

What is the elevation of Death Valley, California?

• 282 feet above sea level

• 282 feet below sea level

• 22 feet above sea level

• 22 feet below sea level

Which point in the ocean is the lowest in the world?

• Mariana Trench

• Tonga Trench

• Puerto Rico Trench

• Java Trench

What is the highest mountain in the world?

• K2

• Lhotse

• Mount Everest

• Kangchenjunga

What does a positive number represent in the context of elevation?

• Underground

• At sea level

• Above sea level

• Below sea level