Lesson 2: Sorting into Three Groups
Lesson Plan
When a Line Bends . . . A Shape Begins
 Learning Goal
 Categorize items into three categories.
 Duration
 Approximately 50 minutes
 Necessary Materials
 Provided: Direct Teaching Example Chart, Guided Practice Example Chart, Independent Practice Worksheet
Not Provided: When a Line Bends . . . A Shape Begins by Rhonda Gowler Greene, scissors, chart paper, markers

Activation & Motivation
Connect to Lesson 1 by repeating the activity of categorizing students by height (tall or short), this time adding medium as a category.

Teacher Modeling
will explain that we can sort objects into more than two groups. I will read aloud When a Line Bends . . . A Shape Begins by Rhonda Gowler Greene and model how to categorize the different shapes from the book into three categories. (Example Chart is provided.)

Think Check
Ask: "How did I put the shapes into three groups?" Students should respond that you looked at how many sides each shape had and put them into a group with other shapes that had the same number of sides.

Guided Practice
will chart three categories from the book and give examples in each category. (Example Chart is provided.)

Independent Practice
will sort pictures into three categories based on their shape. (Independent Practice Worksheets are provided.)
TIP: Add to your students’ vocabulary by including words under the pictures on the Independent Practice worksheet.
Texts & Materials
Standards Alignment
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