Writing and Graphing Inequalities
5 min
Teacher Prep
Setup
Narrative
In this Warm-up, students consider an image of a person standing next to a ladder and a basketball hoop. Students will see this image again in a following activity.
Launch
Tell students to close their books or devices (or to keep them closed). Arrange students in groups of 2. Introduce the image. Use Co-Craft Questions to orient students to the context and elicit possible mathematical questions.
Give students 1–2 minutes to write a list of mathematical questions that could be asked about the situation before comparing questions with a partner.
Student Task
Sample Response
Sample responses:
- How tall is the person?
- What is the elevation of the basketball hoop?
- If the person stands on the ladder, will they reach the top of the basketball hoop?
Activity Synthesis (Teacher Notes)
Invite several partners to share one question with the class, and record responses. Ask the class to make comparisons among the shared questions and their own. Ask, “What do these questions have in common? How are they different?” Listen for and amplify language related to the learning goal, such as “more than,” “less than,” “at least,” and “at most.”
Standards
- 6.NS.7.b·Write, interpret, and explain statements of order for rational numbers in real-world contexts. <em>For example, write -3 °C > -7 °C to express the fact that -3 °C is warmer than -7 °C.</em>
- 6.NS.C.7.b·Write, interpret, and explain statements of order for rational numbers in real-world contexts. <span>For example, write <span class="math">\(-3^\circ C > -7^\circ C\)</span> to express the fact that <span class="math">\(-3^\circ C\)</span> is warmer than <span class="math">\(-7^\circ C\)</span>.</span>
15 min
15 min
Knowledge Components
All skills for this lesson
No KCs tagged for this lesson
Writing and Graphing Inequalities
5 min
Teacher Prep
Setup
Narrative
In this Warm-up, students consider an image of a person standing next to a ladder and a basketball hoop. Students will see this image again in a following activity.
Launch
Tell students to close their books or devices (or to keep them closed). Arrange students in groups of 2. Introduce the image. Use Co-Craft Questions to orient students to the context and elicit possible mathematical questions.
Give students 1–2 minutes to write a list of mathematical questions that could be asked about the situation before comparing questions with a partner.
Student Task
Sample Response
Sample responses:
- How tall is the person?
- What is the elevation of the basketball hoop?
- If the person stands on the ladder, will they reach the top of the basketball hoop?
Activity Synthesis (Teacher Notes)
Invite several partners to share one question with the class, and record responses. Ask the class to make comparisons among the shared questions and their own. Ask, “What do these questions have in common? How are they different?” Listen for and amplify language related to the learning goal, such as “more than,” “less than,” “at least,” and “at most.”
Standards
- 6.NS.7.b·Write, interpret, and explain statements of order for rational numbers in real-world contexts. <em>For example, write -3 °C > -7 °C to express the fact that -3 °C is warmer than -7 °C.</em>
- 6.NS.C.7.b·Write, interpret, and explain statements of order for rational numbers in real-world contexts. <span>For example, write <span class="math">\(-3^\circ C > -7^\circ C\)</span> to express the fact that <span class="math">\(-3^\circ C\)</span> is warmer than <span class="math">\(-7^\circ C\)</span>.</span>