View source for Introducing formation of angle

 
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''[https://karnatakaeducation.org.in/KOER/index.php/Special:ShortUrl/5tb ಈ ಪುಟವನ್ನು ಕನ್ನಡದಲ್ಲಿ ನೋಡಲು ಇಲ್ಲಿ ಕ್ಲಿಕ್ ಮಾಡಿ]''</div>
The standard angle concept based on the relative inclination of two lines meeting at a point irrespective of length of arms is discussed in an exploratory method. 

===Objectives===
* Introduce children to the concept of angle
* To introduce measure of angles
* Methods of measuring angles

===Estimated Time===
30 minutes

===Prerequisites/Instructions, prior preparations, if any===
* Digital : Computer, geogebra application, projector.
* Non digital : Worksheet and pencil.
* Geogebra files : "[https://ggbm.at/ytpascnk Introduction to angle formation]” 
{{Geogebra|ytpascnk}}

===Materials/ Resources needed===
* Digital : Computer, geogebra application, projector.
* Non digital : Worksheet and pencil.
* Geogebra files : "Introduction to angle formation” 

===Process (How to do the activity)===
Prior hands on activity (optional – children can use two pieces of thread to move around a fixed point or two sticks tied with a thread).

'''-Formation of angle'''
* Use the file to demonstrate formation of angle
* Ask how segments rotation changes angle
* Ask how many angles are formed
'''-Measure angles'''
* How do you measure this angle
* Measure both angles as the children say
* Ask if there is any difference in the angle measures
* Mention the convention of clockwise/anticlockwise measurement
* Mention reflex/exterior angle
* Is there a relation between the two angles measured
'''-Angle measure independent of segment length'''
* Does the angle depend on the segment length – drag the line segments to show.
'''Evaluation at the end of the activity'''
* What are the different types  of angles?
* When two segments are joined  at a point how many angles are formed?
* What is the measure of the  total angle formed at a point is?
* What  is the convention used to measure angles?

[[Category:Lines and Angles]]