MAFS.2.MD.4.9 Generate measurement data by measuring lengths of several objects to the nearest whole unit, or by making repeated measurements of the same object. Show the measurements by making a line plot, where the horizontal scale is marked off in whole-number units.

Cognitive Complexity Level: 1-Recall

[divider] [/divider] Students are able to… 

  • Measure and record the lengths of several objects to the nearest whole-number 
  • Create a line plot with a horizontal scale to display the data of the objects they measured 
  • Record length measurements on a line plot
  • Example of a line plot:

[divider] [/divider] Students are able to…because teachers:

  • Use the concept of measuring to graphically display data a set of data on a number line called a line plot. 
  • Include values associated with a line plot, which include: the measurements and the frequency of those measurements.

 [divider] [/divider] Questions to ask students:

  • Ask:  What does the X on the line plot represent?
    • Sample answer that indicates understanding: Student is able to correctly describe what each X represents (each caterpillar/string/etc.)
  • Ask:  What do the numbers on your line plot represent?
    • Sample answer that indicates understanding:  Student is able to describe that the number represents inches, centimeters, some of type of length.
  • Ask:  What do you notice about the data?
    • Sample answer that indicates understanding:  Students is able to explain the data using mathematical language and connections to the line plot labels.  (Example: I noticed the caterpillars with the length of 5 inches were selected the most. I noticed there are 3 more caterpillars with a length of 5 inches than 2 inches).

[divider] [/divider] Additional Resources:

Additional in depth content knowledge

[divider] [/divider] Sample Formative Assessment Tasks:

[divider] [/divider] Resources/Tasks to Support Your Child at Home:

  • Have your child measure different lengths of string, pieces of paper or office supplies at your home.  Have them display the measurement data in a line plot.  Then have them describe what they notice on the line plot.
  • You could extend to ask story problems involving the measurement data on the line plot.
  • Khan Academy: Introduction into Line Plots
  • Youtube: Understand Measurement Data Shown in Line Plots