#### Lesson Plan

## Classifying Quadrilaterals

### Alignments:

### Grade Levels

### Related Academic Standards

### Assessment Anchors

### Eligible Content

### Big Ideas

### Concepts

### Competencies

### Objectives

In this lesson, students will study the different types of quadrilaterals, focusing on their commonalities and distinctions. Students will:

- identify and describe the attributes of quadrilaterals.
- classify quadrilaterals based on characteristics into subcategories of quadrilaterals, including parallelograms, rectangles, rhombi, squares, and trapezoids.

### Essential Questions

- How can patterns be used to describe relationships in mathematical situations?
- How can recognizing repetition or regularity assist in solving problems more efficiently?
- How can the application of the attributes of geometric shapes support mathematical reasoning and problem solving?
- How can geometric properties and theorems be used to describe, model, and analyze situations?
- How are spatial relationships, including shape and dimension, used to draw, construct, model, and represent real situations or solve problems?

### Vocabulary

**Pentagon:**A polygon with exactly five sides.**Polygon:**A closed plane figure bounded by three or more line segments**Quadrilateral:**A polygon with exactly four sides.**Rhombus:**A quadrilateral with sides of equal length.

### Duration

60–90 minutes

### Prerequisite Skills

### Materials

- geoboards and rubber bands

(a virtual geoboard can be found at http://www.mathplayground.com/geoboard.html)

- one copy of the Classifying Quadrilaterals practice worksheet (M-3-4-2_Classifying Quadrilaterals and KEY.docx) per student
- one copy of the Terms and Definitions worksheet (M-3-4-2_Terms and Definitions and KEY.docx) per student
- one copy of the Lesson 2 Exit Ticket (M-3-4-2_Lesson 2 Exit Ticket and KEY.docx) per student

### Related Unit and Lesson Plans

### Related Materials & Resources

The possible inclusion of commercial websites below is not an implied endorsement of their products, which are not free, and are not required for this lesson plan.

- http://www.math-play.com/Polygon-Game.html
- http://www.mathsisfun.com/geometry/quadrilaterals-interactive.html

### Formative Assessment

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