In this unit, students collect data and display it with tally marks, pictographs, bar graphs, and glyphs. Some previous experience with classification will enhance students’ success with this unit. Students explore logical and numerical relationships.
The unit begins with a lesson that focuses on classification--the foundation for
algebraic thinking--and with a review of one-to-one correspondence. Then
students explore patterns and the relationships between numbers.
Individual Lessons
Lesson 1 - Freckle Face This lessson initiates the development of skills in collecting and recording data. Students collect data about a partner's face and tally the data from the whole class. They learn the convention for displaying a set of five using tally marks. Then students create a pictograph and pose and answer questions about the data set. Lesson 2 - The Eyes Have It Students collect data about the eye color of class members. They create bar graphs with several classifications of data. They pose and answer questions about the data by looking at the graph, and they find the range and mode. Lesson 3 - Up on Top In this lesson students generate bar graphs. Posing and answering questions using the graphs gives them an opportunity to apply their reasoning and communication skills. They also consider whether a given category is likely, certain, or impossible. Lesson 4 - Making Glyphs In this lesson, students learn a powerful way to display data—using a glyph. They collect data and create pictures using the data. Students also interpet glyphs made by other students.
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