Lesson 11
Pounds and Ounces
Lesson Purpose
Lesson Narrative
In previous lessons, students worked with metric units for length, weight, and capacity. Students may have encountered pounds and ounces in various contexts in or outside the classroom. Students may know that pound is the larger unit of the two. This lesson helps students develop a sense of 1 pound as 16 times as heavy as 1 ounce and to use this insight to convert pounds to ounces.
- Representation
- MLR8
Learning Goals
Teacher Facing
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Describe the multiplicative relationship between pounds and ounces.
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Express pounds in terms of ounces.
Student Facing
- Let’s explore measurements in pounds and ounces.
Required Materials
Materials to Copy
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Pounds and Ounces
Required Preparation
Activity 1:
- Create a set of cards from the blackline master for each group of 4.
- If possible, gather examples of packaged food items—one that is labeled “1 ounce” and another labeled “1 pound”.
Lesson Timeline
| Warm-up | 10 min |
| Activity 1 | 20 min |
| Activity 2 | 15 min |
| Lesson Synthesis | 10 min |
| Cool-down | 5 min |
Teacher Reflection Questions
Suggested Centers
- Would You Rather? (2–5), Stage 2: Compare to Smaller Units (Addressing)
- Compare (1–5), Stage 3: Multiply within 100 (Supporting)
Print Formatted Materials
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| Student Task Statements | docx | |
| Lesson Cover Page | docx | |
| Cool Down | Log In | |
| Teacher Guide | Log In | |
| Teacher Presentation Materials | docx | |
| Blackline Masters | zip |