G6 L13-1 to 13-3 Areas of Quadrilaterals & Triangles

Less 13-1 to 13-3

Areas of Quadrilaterals & Triangles

Lessons Objectives

· Find the areas of parallelograms and rhombuses.

· Find the areas of triangles.

Find the areas of special quadrilaterals.

INTRODUCTION

Collect 4 to 5 items that have different shapes. 

Which items are quadrilaterals?

Which items are triangles?

Open Ended

How are triangles and quadrilaterals similar and different?

What are QUADRILATERALS?

• Quadrilaterals are four-sided polygons.

• They are classified by the characteristics of their sides and angles.

• Rectangles, squares, parallelograms, rhombi, and trapezoids are all quadrilaterals.

What are TRIANGLES?

• Triangles are three-sided polygons.

• They can be classified by their sides and their angles.

• Types of triangles include equilateral, scalene, right and isosceles.

Open Ended

What does it mean to find the area of a figure?

What does it mean to find the area of a figure?

• The area is the space occupied by a flat shape or the surface of an object. 

• The area of a figure is the number of square units needed to cover the figure.

• The area is measured in square units such as square centimteres, square feet, square inches, etc.

Open Ended

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