Absolute Values and Elevations

Mrs. Nelson teaches a sixth-grade math lesson on comparing numbers and distances from zero. The lesson focuses on using absolute values to describe elevations and inequalities to compare rational numbers. Through Activity 7.2, students compare the elevation of a submarine at -100 feet with four individuals: Claire, Andre, Han, and Lin. Each person's elevation is analyzed in terms of its distance from sea level, using absolute values and inequalities. The lesson concludes with a summary and completion of a table with possible elevations for each person.

What is the main objective of the lesson on comparing numbers and distances from zero?

• To understand multiplication and division

• To use absolute values to describe elevations

• To learn about fractions and decimals

• To explore geometric shapes

If Claire's elevation is greater than the submarine's and farther from sea level, where could she be located?

• At 150 feet

• At 99 feet

• At -101 feet

• At -99 feet

Andre's elevation is less than the submarine's and farther from sea level. What could be his elevation?

• 100 feet

• 99 feet

• -99 feet

• -101 feet

Han's elevation is greater than the submarine's but closer to sea level. What could be his elevation?

• 150 feet

• 99 feet

• -150 feet

• -101 feet

Lin's elevation is the same distance from sea level as the submarine. Where could Lin be located?

• At 50 feet

• At -100 feet

• At -50 feet

• At 0 feet

What is the absolute value of an elevation of -101 feet?

• -101 feet

• 101 feet

• 100 feet

• -100 feet

Which of the following elevations is farther from sea level than the submarine's elevation?

• -99 feet

• 0 feet

• 99 feet

• -101 feet

What is the absolute value of 150 feet?

• -150 feet

• 150 feet

• -100 feet

• 100 feet

How can inequalities be used in this lesson?

• To solve algebraic equations

• To measure angles

• To compare rational numbers and their absolute values

• To compare geometric shapes

What is the absolute value of an elevation of 99 feet?

• -100 feet

• 100 feet

• -99 feet

• 99 feet