2.MD.4/MEASUREMENT AND DATA

MATH DOMAIN / 2.MD.4/MEASUREMENT AND DATA
Grade 2
Math Cluster / Math Standard / Mathematic Practices
Measure and estimate lengths in standard units / 2.MD.4 Measure to determine how much longer one object is than another, expressing the length difference in terms of a standard length unit. /
  1. Make sense of problems and persevere in solving them.
  2. Reason abstractly and quantitatively.
  3. Construct viable arguments and critique the reasoning of others.
  4. Model with mathematics.
  5. Use appropriate tools strategically.
  6. Attend to precision.
  7. Look for and make use of structure.
  8. Look for and express regularity in repeated reasoning.

Reporting Standard / Trimester 1 / Trimester 2 / Trimester 3
Measurement: Measure and compare the length of objects using U.S. customary and metric units. / Teach concepts as appropriate. Use this time to concentrate on number sense. / (Tested)
Task Analysis
1.MD.2 Express the length of an object as a whole number of length units, by laying multiple copies of a shorter object (the length unit) end to end; understand that the length measurement of an object is the number of same-size units that span it with no gaps or overlaps. Limit to contexts where the object being measured is spanned by a whole number of length units with no gaps or overlaps.
Learning Tasks:
Use concrete materials to measure two different objects using the same unit of measurement.
Express the difference in length using inches, centimeters, etc.
  • Example: Pencil A is 2 inches longer than Pencil C.
2.MD.4 Measure to determine how much longer one object is than another, expressing the length difference in terms of a standard length unit.
Vocabulary
Prior / Explicit
  • Ruler
  • Length
  • Tool
  • Bigger than
  • Smaller than
  • Longer
  • Shorter
/
  • Ruler
  • Length
  • Tool
  • Yard stick
  • Meter stick
  • Measuring tape
  • Inches
  • Feet
  • Centimeters
  • Meters
  • Appropriate
  • Units of measurement
  • Difference

2.MD.4 Sample Assessment Items earning a “3” in reporting system
Measure both rectangles.
Rectangle A
___ inches
Rectangle B
___inches
How much longer is Rectangle B than Rectangle A? ____ inches
Measure about how long each arrow is in inches.
Arrow A
___inches
Arrow B ___inches
Which arrow is longer? By about how much? ______inches
Assessment Rubric
1 / No evidence of a strategy.
2 / Evidence that the student used a correct strategy but answered incorrectly. OR The student answered correctly with no evidence of strategy.
3 / Evidence that the student used a correct strategy,and correct equation, andanswered correctly.
4 / On a level 4 question: Evidence that the student used a correct strategy, and correct equation, and answered correctly.
2.MD.4 Sample Assessment Items earning a “4” in reporting system
June is making a chart to record how tall her friends are now that they are starting third grade. Each friend was supposed to measure themselves at home and text June their height. Here is her chart:
Name / Measurement
Jose / 1 yard and 1 ruler and 3 inches
Gabby / 1 yard and 2 rulers
Fred / 46 inches
Maria / 52 inches
Steve / ?
Lily / ?
Oops! Steve and Lily did not text June their height. But Gabby knows she is 2 inches taller than Lily and Fred knows he is half a ruler shorter than Steve.
How tall is Lily?
How tall is Steve?
Who is tallest? How do you know?
Who is shortest? How do you know?

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