Unit 2.1 Measure and Estimate Lengths in Standard Units
Learning Objectives
Students will be able to:
* Measure the length of an object by using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes and understand that linear measure involves an iteration of units.
* Demonstrate understanding of the relationship between the size of a unit and the number of units needed in a particular measurement.
* Recognize the need for standard units (inches, feet, centimeters, meters).
* Estimate lengths using units of inches and feet.
* Estimate lengths using units of centimeters and meters.
Essential Questions ·
* How would you select a tool to measure ________?
* What’s your strategy for estimating the length of a ________?
* How can you describe the relationship between the size of a unit and the number of units needed?
* How would you measure the length of the room using a yardstick?
* Why do we need standard units?
Key Vocabulary
centimeter meter units standard units estimation
Common Core State Standards for Mathematical Content
Measurement and Data 2.MD
Measure and estimate lengths in standard units.
2.MD.1 Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.
2.MD.3 Estimate lengths using units of inches, feet, centimeters, and meters.
Common Core State Standards for Mathematical Practice
5 Use appropriate tools strategically.
* Select and use appropriate tools, such as rulers, yardsticks, meter sticks, and measuring tapes, to measure the length of objects.
*Use estimation to determine reasonableness of measurement.
Students will be able to:
* Measure the length of an object by using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes and understand that linear measure involves an iteration of units.
* Demonstrate understanding of the relationship between the size of a unit and the number of units needed in a particular measurement.
* Recognize the need for standard units (inches, feet, centimeters, meters).
* Estimate lengths using units of inches and feet.
* Estimate lengths using units of centimeters and meters.
Essential Questions ·
* How would you select a tool to measure ________?
* What’s your strategy for estimating the length of a ________?
* How can you describe the relationship between the size of a unit and the number of units needed?
* How would you measure the length of the room using a yardstick?
* Why do we need standard units?
Key Vocabulary
centimeter meter units standard units estimation
Common Core State Standards for Mathematical Content
Measurement and Data 2.MD
Measure and estimate lengths in standard units.
2.MD.1 Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.
2.MD.3 Estimate lengths using units of inches, feet, centimeters, and meters.
Common Core State Standards for Mathematical Practice
5 Use appropriate tools strategically.
* Select and use appropriate tools, such as rulers, yardsticks, meter sticks, and measuring tapes, to measure the length of objects.
*Use estimation to determine reasonableness of measurement.