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From Karnataka Open Educational Resources
→Concept #
First teacher can talk about or try to elicit basic points of geometry like lines, collinear and non collinear point, vertices,sides ect. this leads to the triangle definition.Then by using activity try to classify triangle based on side and angles and name them. teacher can also try to elicit live examples for triangle which are seen in daily life. Teacher can use the inducto deductive or CAM method.
First teacher can talk about or try to elicit basic points of geometry like lines, collinear and non collinear point, vertices,sides ect. this leads to the triangle definition.Then by using activity try to classify triangle based on side and angles and name them. teacher can also try to elicit live examples for triangle which are seen in daily life. Teacher can use the inducto deductive or CAM method.
===Activity No # classification of triangle based on sides ===
===Activity No 1 # classification of triangle based on sides ===
{| style="height:10px; float:right; align:center;"
{| style="height:10px; float:right; align:center;"
|<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;">
|<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;">
* '''Question Corner'''
* '''Question Corner'''
===Activity No # ===
===Activity No 2 # Interior Angle Sum Property of a triangle ===
{| style="height:10px; float:right; align:center;"
{| style="height:10px; float:right; align:center;"
|<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;">
|<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;">
''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
|}
|}
* '''Estimated Time'''
* '''Estimated Time-'''45 minutes
* '''Materials/ Resources needed'''
* '''Materials/ Resources needed'''
* '''Prerequisites/Instructions, if any'''
* chart paper, pencil, scale, protractor
* '''Prerequisites/Instructions, if any''' ''Students need to know:''
* '''Website interactives/ links/ Geogebra Applets'''
** a triangle is a three sided polygon.
* '''Process (How to do the activity)'''
** types of triangles by sides and angles.
* '''Developmental Questions (What discussion questions)'''
** the characteristics of triangles by sides and angles.
* '''Evaluation (Questions for assessment of the child)'''
** facts of supplementary, adjacent and vertical angles.
* '''Question Corner'''
** write and solve simple linear equations.
* '''Estimated Time'''
* '''Materials/ Resources needed'''
* '''Estimated Time'''
* '''Materials/ Resources needed'''
* '''Multimedia resources'''
* '''Multimedia resources'''
* Laptop
* '''Website interactives/ links/ Geogebra Applets'''
* '''Website interactives/ links/ Geogebra Applets'''
* Geogebra file on interior angle sum of a triangle, [https://www.ck12.org/assessment/tools/geometry-tool/plix.html?eId=MAT.GEO.407.01&questionId=546667e25aa4130310c1bed3&artifactID=1884324&backUrl=https%3A//www.ck12.org/geometry/triangle-angle-sum-theorem/%23interactive&plix_redirect=1 Lighthouse (ck-12 series)]
* '''Process (How to do the activity)'''
* '''Process (How to do the activity)'''
* Students are taken through an inductive process of constructing a triangle using sliders for length of sides and an angle. The angle slider is moved to generate different types of triangles. The interior angle sum of different types of triangles are compared.
* '''Developmental Questions (What discussion questions)'''
* '''Developmental Questions (What discussion questions)'''
* '''Evaluation (Questions for assessment of the child)'''
* '''Evaluation (Questions for assessment of the child)'''
* '''Question Corner'''
* '''Question Corner'''
= Hints for difficult problems =
==Project Ideas==
= Project Ideas =
= Math Fun =
= Math Fun =
Create a new page and type <nowiki>{{subst:Math-Content}}</nowiki> to use this template
Create a new page and type <nowiki>{{subst:Math-Content}}</nowiki> to use this template
[[Category:Class 8]]
[[Category:Triangles]]
