2022 5-GM-3-5

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5.GM.3.5

5.GM.3.5 Estimate lengths and geometric measurements to the nearest whole unit, using benchmarks in customary and metric measurement systems.

In a Nutshell

This objective has students building on the background knowledge of using the relationship within the units in the customary or metric systems. Students will be able to estimate the measurement of an object by its angles, weight, length, or capacity.

Student Actions	Teacher Actions
Develop a deep and flexible conceptual understanding by actually measuring objects using system-specific units with a chosen measurement tool. Develop strategies for problem-solving by measuring within customary and metric systems using appropriate benchmark units. Begin to generalize by estimating lengths, angles, capacities, and weights in various objects and scenarios. Communicate mathematically by collaborating on meaningful projects that include opportunities to estimate geometric measurements and use the appropriate mathematical language and terms.	Build procedural fluency from conceptual understanding through multiple opportunities for students to establish an understanding of the benchmark measurements of metric and customary systems. Implement tasks that promote reasoning and problem-solving by allowing students to build knowledge through inquiry. Facilitate meaningful mathematical discourse through explicit vocabulary instruction related to student activities related to the objective. Pose purposeful questions involving geometric measurements.
Key Understandings	Misconceptions
Measurement is a process of comparison. Length is a linear measurement. Customary benchmarks of length are inches, feet, yards, and miles. Metric benchmarks of length are millimeters, centimeters, meters, and kilometers. In this objective, geometric measurements include angles, weight, and capacity.	Customary and metric units of measurement are the same. An understanding of the actual length of the unit is not accurate Everything is length. Units within a measurement system can be mixed when measuring.
Knowledge Connections
Prior Knowledge	Leads to
Determine and justify the best use of customary and metric measurements in a variety of situations (liquid volumes, mass vs. weight, temperatures above 0 (zero) degrees, and length. (4.GM.2.7)	Solve problems that require the conversion of lengths within the same measurement systems using appropriate units. (6.GM.4.2)