Order three objects by length; compare the lengths of two objects indirectly by using a third object.


Lesson Planning and Activity Resources

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1.MD.A.1 From Illuminations: Use a number line to compare lengths and find differences.

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1.MD--Interactive games for Measurement & Data

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Grade 1 Unit: Sorting, Comparing, and Ordering
(from Georgia Department of Education)
This unit addresses KCAS 1.MD.1-4.
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http://www.commoncoresheets.com/SortedByGrade.php?Sorted=1md1
  • Interactive Material - Order the blocks by length.
  • Worksheets comparing the length of three different sized bars.