Difference between revisions of "Area of a quadrilateral"

Latest revision as of 07:54, 29 October 2019

A diagonal divides a quadrilateral into 2 triangles. Understanding area of a quadrilateral in terms of triangles is done with this activity.

Objectives

To find the area of a quadrilateral

Estimated Time

40 minutes

Prerequisites/Instructions, prior preparations, if any

Prior understanding of properties of triangles

Materials/ Resources needed

Digital : Computer, geogebra application, projector.
Non digital : Worksheet and pencil
Geogebra files : ‘Area of a quadrilateral.ggb’

Download this geogebra file from this link.

Process (How to do the activity)

How can the quadrilateral be divided into triangles?
What is common for the two triangles formed?
How can the area of the quadrilateral be found with the two triangles that are formed?
Record the values of segments

Value of diagonal AC (f)	Value of h	Value of j	Area of triangle ABC	Area of triangle ADC	Area of Quadrilateral
.
.

Evaluation at the end of the activity

Can the area of any quadrilateral be found with this method

@@ Line 1: / Line 1: @@
-===Name of the activity===
+A diagonal divides a quadrilateral into 2 triangles. Understanding area of a quadrilateral in terms of triangles is done with this activity.
-Brief blurb describing what the activity.  If this has been borrowed from some external web site (for example, a non OER or OER site which had this idea and based on which the activity was developed)
-=== Objectives ===
+=== Objectives===
-Content objectives  - what content areas
+To find the area of a quadrilateral
-Skill objectives - what specific skills
-Classroom objectives - to demo peer learning, to make a classroom resource, etc -
-All these kinds of objectives need not be there for every activity.  And no need to list them as different headings.  This is only for our reference when we are developing activities.
 ===Estimated Time===
+minutes
 === Prerequisites/Instructions, prior preparations, if any ===
+Prior understanding of properties of triangles
 ===Materials/ Resources needed===
+* Digital : Computer, geogebra application, projector.
+* Non digital : Worksheet and pencil
+* Geogebra files : ‘[https://ggbm.at/r9etseqb Area of a quadrilateral.ggb]’
+{{Geogebra|r9etseqb}}
 ===Process (How to do the activity)===
-How to do the different steps of the activity?
+* How can the quadrilateral be divided into triangles?
+* What is common for the two triangles formed?
-What kinds of questions you can ask for that activity
+* How can the area of the quadrilateral be found with the two triangles	that are formed?
+* Record the values of segments
-What are the student follow-up activities/ questions you can give?
+: {| class="wikitable"
+|Value of diagonal AC (f)
-Categories:  (Subject) (Topic) (Sub-concept/topic) (Class 6) (Resource format)
+|Value of h
+|Value of j
+|Area of triangle ABC
+|Area of triangle ADC
+|Area of Quadrilateral
+|-
+|.
+|
+|
+|
+|
+|
+|-
+|.
+|
+|
+|
+|
+|
+|} '''Evaluation at the end of the activity'''
+:* Can the area of any quadrilateral be found with this method
-Example -  (Mathematics) (Triangle) (Area) (Perimeter) (Class 6) (Class 8) (Geogebra) (Video)
+[[Category:Quadrilaterals]]