Measure lengths with non-standard units.
Express the length of an object as a whole number of non-standard length units.
Measure by laying multiple copies of a shorter object (the length unit) end to end (iterating) with no gaps or overlaps.
Step 1: Lesson Standards & Learning Goals
This standard focuses on the process of measuring the length of an object. In first grade the focus is on the process of iterating a unit, which is a short object (e.g., cube or paper clip) that is used to measure the lengths of longer objects without gaps or overlaps.
Developmentally, this standard follows after students have had ample opportunities to directly compare the lengths of two or three objects (NC.1.MD.1). The process of iterating a non-standard length unit without gaps or overlaps may be challenging for students who are still developing their fine motor skills. Snap cubes may be the easiest manipulative for those students since the cubes will connect and form a straight line of multiple non-standard length units.
What units of measure can be used for measuring length?
How do I use smaller objects to measure larger objects?
What is a unit of measure?
Explain the process for measuring an object.
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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 with no gaps or overlaps.
Understand that the length measurement of an object is the number of same-size length units that span it with no gaps or overlaps.
Recognize that the smaller the unit, the greater the number of units needed to measure the length.
The length of an object is measurable.
The length of any object (paperclips, snap cubes, centimeter cubes, etc.) can be used as a non-standard measurement unit for length.
A standardized unit is always the same length.
Measurement is the process of comparing a unit to the object being measured.
Step 2: Assessment
NCDPI Math Assessment Released Forms
Grade 1 Math Assessment Practice Prompts
Grade 1 Released Summative Assessments
Step 3: Lesson Instructions
Tools 4 NC Teachers
Cluster 4 Lessons
Math Expressions - (Barnes and Hearne) - Standards Alignment
Motivation Math
Think Up! Math
Khan Academy - 1st Grade Math
Eureka Math/Engage NY Free Resources
Embarc Online (Eureka Math)
Zearn Math - Online Support Practice for Eureka Math (Requires free account)
North Carolina Collaborative for Mathematics Learning - Grade 1 Instructional Framework
NCDPI Resources
Grade 1 Math Assessment Practice Prompts
