# 1. Picture Day Dilemma: Measure height in inches (C)

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: Understand that measurement data can be generated by measuring multiple objects.

Students bring prior knowledge of measurement from 2.MD.A.1. This prior knowledge is extended to measuring multiple objects and collecting data as students measure each other's heights. A conceptual challenge students may encounter is accurately using the appropriate tool to measure.

The concept is developed through work with a yard stick or tape measure and a data table, which allows students to generate their own data and record it on a table.

This work helps students deepen their understanding of numbers because they are using yard sticks or rulers and gaining an understanding that numbers can represent height.

Students engage in Mathematical Practice 6. Students will measure with precision using standard units in order to collect data sets as they measure each other's heights and record these heights on their student data tables.

Key vocabulary:

• centimeter/centimeters
• data
• data table
• height
• inch/inches
• length
• measurement

Special materials needed:

• rulers
• tape measures (optional)
• yard sticks
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