Changes

=== Concept Map ===

=== Concept Map ===

[[File:Quadrilaterals.mm|flash]]

[[File:Quadrilaterals.mm|flash]]

=Textbook=

==Textbook==

To add textbook links, please follow these instructions to: ([{{fullurl:{{FULLPAGENAME}}/textbook|action=edit}} Click to create the subpage])

To add textbook links, please follow these instructions to: ([{{fullurl:{{FULLPAGENAME}}/textbook|action=edit}} Click to create the subpage])

=Additional Information=

==Additional Information==

This videos is related to classification and properties of quadrilaterals.

This videos is related to classification and properties of quadrilaterals.

{{#widget:YouTube|id=0OW2bU0So-4}}    {{#widget:YouTube|id=udS3nkj2cfg}}

{{#widget:YouTube|id=0OW2bU0So-4}}    {{#widget:YouTube|id=udS3nkj2cfg}}

==Useful websites==

===Useful websites===

#[http://www.shodor.org/ihnteractivate/discussions/Quadrilaterals/ click here] : For effective introduction to quadrilaterals.

#[http://www.shodor.org/ihnteractivate/discussions/Quadrilaterals/ click here] : For effective introduction to quadrilaterals.

#[http://www.mathopenref.com/quadrilateral.html click here]  : Simple explanation about quadrilaterals.

#[http://www.mathopenref.com/quadrilateral.html click here]  : Simple explanation about quadrilaterals.

#[http://www.slideshare.net/muzzu1999/types-of-quadrilaterals-and-its-properties-group-4 click here]  : This website has a very good activity on properties of quadrilaterals.

#[http://www.slideshare.net/muzzu1999/types-of-quadrilaterals-and-its-properties-group-4 click here]  : This website has a very good activity on properties of quadrilaterals.

#[http://www.cimt.plymouth.ac.uk/projects/mepres/book8/bk8i1/bk8_1i3.htm click here]  This is a very good website for students to understand classification of quadrilaterals as per their properties.

#[http://www.cimt.plymouth.ac.uk/projects/mepres/book8/bk8i1/bk8_1i3.htm click here]  This is a very good website for students to understand classification of quadrilaterals as per their properties.

==Reference Books==

===Reference Books===

*Please download 9th standard mathematics textbook of Tamil Nadu state syllabus from the following link and refer the page 89 [http://www.textbooksonline.tn.nic.in/Std9.htm click here]

*Please download 9th standard mathematics textbook of Tamil Nadu state syllabus from the following link and refer the page 89 [http://www.textbooksonline.tn.nic.in/Std9.htm click here]

*Refer 9th standard mathematics ncert  textbook from the following link [http://www.ncert.nic.in/ncerts/textbook/textbook.htm?iemh1=8-15 click here]

*Refer 9th standard mathematics ncert  textbook from the following link [http://www.ncert.nic.in/ncerts/textbook/textbook.htm?iemh1=8-15 click here]

=== Additional Resources  ===

=== Additional Resources  ===

==== OER  ====

==== OER  ====