Grade 2 Mathematics Module 7, Topic F

girl with teacher

Building on the work in Topic E, students now connect the process of measuring to displaying data in line plots. In Lesson 23, the students measure their own handspan (i.e., the distance from the tip of the thumb to the tip of the pinky with hand fully extended) as well as those of five friends, rounding the lengths to the nearest whole inch. They then share the data as a class. Using tally marks, students create a table to record and organize the data. Then, in Lesson 24, students display the data from the table as a line plot, relating the horizontal measurement scale in whole centimeters and inches to the number line diagram (2.MD.9). Students observe and comment on the patterns they observe in the line plot. Finally, in Lessons 25 and 26, students are presented with different data sets, which they represent using line plots (2.MD.6). They then discuss the results and learn how to interpret the data. For example, using the table shown, students create a plot and then answer questions such as, “What was the most common distance reached? What was the least common?” They infer and draw conclusions from the data set and representations, discovering that while a table is useful for organizing data, a line plot allows for the visual comparisons of the different quantities.

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Common Core Learning Standards

CCLS State Standard
2.MD.6 Represent whole numbers as lengths from 0 on a number line diagram with equally spaced points...
2.MD.9 Generate measurement data by measuring lengths of several objects to the nearest whole unit, or by...

Curriculum Map