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5-GM-3-3

Page history last edited by Brenda Butz 6 years, 2 months ago

5.GM.3.3 Recognize and use the relationship between inches, feet, and yards to measure and compare objects.

In a Nutshell

In objective 5.GM.3.3, students will focus on customary units. They will have to have a base knowledge of what an inch, foot, and yard looks like. Students will identify what measurement should be used to measure a certain object and be able to compare what objects are bigger or smaller based on their measurement. They will not have to convert from one form to another.

Student Actions	Teacher Actions
Develop Accurate and Appropriate Procedural Fluency by comparing measurements within the same system of measurement in the context of multi-step, real-world problems; for example, students will understand that 18 inches is less than 2 feet. Develop a Deep and Flexible Conceptual Understanding by estimating measures of objects from one unit to another unit. Develop the Ability to Communicate Mathematically by using precise language when specifying units of measure.	Implement tasks that promote reasoning and problem solving and allow students to bring their background knowledge of length measurement to the task. Pose purposeful questions to assess student justification when comparing objects of different unit measurements. Use and connect mathematical representations by choosing the correct tool for measuring an object’s length, and then comparing that to a different object.
Key Understandings	Misconceptions
Model and justify the relationship between an inch, foot, and yard. Connect real world objects to benchmark estimates of length; for example, they might know that a small paperclip is about 1 inch. Explain that an inch is 1/12 of a foot, and a foot is ⅓ of a yard, so therefore an inch is 1/36 of a yard. Justify that a yard is 3 times the size of a foot, and a foot is 12 times the size of an inch, therefore a yard is 36 times the size of an inch. Use the relationship between inches, feet, and yards, to compare objects.	Believe that the size of a picture determines the size of the object in real life. Have a limited number of units of measure that he knows and understands and uses these units inappropriately.