Lesson Plan: Lesson plans were written by Maryland mathematics educators and could be used when teaching the concepts.
 Goal 1 Functions and Algebra Expectation 1.2 The student will model and interpret real-world situations using the language of mathematics and appropriate technology. Indicator 1.2.2 The student will solve linear inequalities and describe the solutions using numbers, symbols, and/or graphs.

### Lesson Content

Linear Inequalities

### Objectives

• Students will use technology to graph and evaluate linear inequalities.
• Students will write and manipulate inequalities for use on a graphing calculator.
• Students will use knowledge of intercepts to analyze inequalities.

### Calculator Skills

• Entering and evaluating inequalities on a graphing calculator.
• Using the trace and intercept capabilities of the calculator.

Class discussion

### Lesson Structure

Concept Development for this lesson uses the following worksheet: Lilies and Daisies.
Teacher tips for using Lilies and Daisies

### Evaluating Inequalities Using the Calculator

Have students work in pairs to write an inequality for the given situation and solve the inequality in slope-intercept form.

### Exploration

Students will enter the inequality into the calculator to get an appropriate picture of the situation. Students will answer questions using the calculator and mathematical reasoning about the inequality.

### Class Discussion

Students will explain the mathematical knowledge used to answer various questions throughout the lesson.

### Additional Practice

Inequalities
These problems are provided for you to use in any one of a variety of ways such as homework, an individual check for understanding, review, or quiz. They are provided at the end of the lesson.

/share/clg/xml/lesson_plans/mathematics/LinearInequalities_122.xml