Lesson plan

Interpret and compare categorical data using a picture graph

teaches Common Core State Standards CCSS.Math.Content.2.MD.D.10 http://corestandards.org/Math/Content/2/MD/D/10
teaches Common Core State Standards CCSS.Math.Content.2.OA.A.1 http://corestandards.org/Math/Content/2/OA/A/1
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Practice.MP3 http://corestandards.org/Math/Practice/MP3

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Big Ideas: Addition and subtraction can be used to summarize and interpret data. Data can be used in everyday life to describe and quantify the world. This lesson builds on the students' work with collecting and sorting survey data. The task uses the pretense of a teacher, Mr. Davin, needing information about school garden supplies. Students are asked to interpret data results and complete a tally chart. Students will use the tally chart to create a picture graph and write a question relating to the data for their peers. Students are then asked to decide on one picture to represent the data and explain why they chose this symbol. Through this task, students will discover that picture graphs make it easier to visualize and interpret data. The mathematical concepts in this lesson build toward students' future work with drawing and solving word problems with scaled picture graphs. Vocabulary: tally chart, representation, data, category, picture graph, vertical, horizontal, total, count (referring to a total of a group) Special Materials: 1 to 1 1/2 inch Grid Paper Tally Chart Template Blank or lined paper (for task question and solution) Optional: Sticky notes Chart paper Stamps, stickers, stencils (support for symbol selection)