# 6. Measuring a pencil being sharpened to gather data (FP)

teaches Common Core State Standards CCSS.Math.Content.2.MD.D.9 http://corestandards.org/Math/Content/2/MD/D/9
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4
teaches Common Core State Standards CCSS.Math.Practice.MP6 http://corestandards.org/Math/Practice/MP6

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Lesson objective: Measure the same object multiple times to generate and collect measurement data.

This lesson helps to build procedural skills with measuring to the nearest whole number. A ruler and a data table are used here because it supports students as they measure and record the data they are creating. This work develops students' understanding that we can generate measurement data by measuring a single object more than once.

Students engage in Mathematical Practice 6 (Students will measure with precision using standard units in order to collect data sets) as they measure and record the data they create by sharpening a pencil.

Key vocabulary:

• centimeter
• inch
• length
• measurement

Special materials needed:

• hand-held pencil sharpener (ideally one per student or one per every two students)
• unsharpened pencil (one per student)
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