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.
- Describe the multiplicative relationship between pounds and ounces.
- Express pounds in terms of ounces.
- Let’s explore measurements in pounds and ounces.
Materials to Copy
- Pounds and Ounces
- 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”.
|Activity 1||20 min|
|Activity 2||15 min|
|Lesson Synthesis||10 min|
Teacher Reflection Questions
- 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|