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Mathematics (2019) Grade(s): 3

Measure lengths using rulers marked with halves and fourths of an inch to generate data and create a line plot marked off in appropriate units to display the data.

Unpacked Content


Students know:
  • Nearest half and nearest quarter inch on a ruler.
  • A ruler is a type of number line and shows fraction of 1/2 and 1/4.


Students are able to:
  • Measure objects to the nearest half and fourth of an inch.
  • Create a line plot to display the data of the objects measured.


Students understand that:
  • A line plot is a graph that displays a distribution of data values, including whole numbers, halves and quarters, such that each data value is marked above a horizontal line with an X or dot.
  • A ruler is a type of number line partitioned equally and shows halves and fourths.


  • Halves
  • Fourths
  • Data
  • Line plot
  • Unit
  • Quarter inch
  • Horizontal
  • Partition