# 3.MD.B.4

Generate measurement data by measuring lengths using rulers marked with halves and fourths of an inch. Show the data by making a line plot, where the horizontal scale is marked off in appropriate units— whole numbers, halves, or quarters.

## Summary:

Length measurement is an opportunity for students to physically explore the world around them. This standard also brings in the element of visual display which incorporates graphing and analyzing a data set.

## Understanding the Standard:

• Length measurement provides students with a variety of opportunities to explore this concept. Have students measure a variety of objects and then sort those objects into comparison sets.
• Teachers may need to guide students through the process of creating their own graph for displaying the results of their data sets.
• Manipulatives and technologies are useful tools for students’ learning of this concept.

## Questions to Focus Instruction:

• Are students able to correctly measure the lengths of objects to the nearest half and fourth of an inch?
• Can students compare the lengths of more than two objects by creating a visual display of the data set they generated?
• Can students create a graph with the appropriately labeled scales?

## Skills

Prior to: Students have had extensive work with rulers and measurement. Separately, students have analyzed graphs representing specific data sets and have created their own. Students understand the concept of fourths and quarters as the same terminology representing the same amount. Go to 2.MD.D.9 to see previous skills in this progression.

At Grade Level: Students will measure the lengths of a variety of objects and then display their data set in an appropriate graph.