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Instructor Overview

Lesson Overview

Students represent real-world situations using inequality statements that include a variable.

Key Concepts

Inequality statements tell you whether values in a situation are greater than or less than a given number and also tell you whether values in the situation can be equal to that number or not.

The symbols < and > tell you that the unknown value(s) in a situation cannot be equal to a given number: the unknown value(s) are strictly greater than or less than the number. The inequality x < y means x must be less than y. The inequality x > y means x must be greater than y.

The symbols ≤  and ≥ tell you that the unknown value(s) in a situation can also be equal to a given number: the unknown value(s) are less than or equal to, or greater than or equal to, the number. The inequality xy means x is less than or equal to y. The inequality xy means x is greater than or equal to y.

Goals and Learning Objectives

  • Understand the inequality symbols <, >, ≤, and ≥.
  • Write inequality statements for real-world situations.

ELL: When writing the summary, provide ELLs access to a dictionary and give them time to discuss their summary with a partner before writing, to help them organize their thoughts. Allow ELLs who share the same primary language to discuss in their native language if they wish.