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Intersection of lines and Angle Formation (view source)

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Source: IT for Change
 
Source: IT for Change
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===Objectives===
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=== Objectives ===
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#To visualize the meeting point of lines/rays forms an angle
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To verify vertically opposite angles are equal
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#Understanding the use of protractor to measure angle
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#Familiar with the angle formation
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#Get to know about classification of angles
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===Estimated Time===
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90 minutes
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10 - 15 minutes : previous class worksheet discussion
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=== Estimated Time ===
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20 minutes
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60 minutes : Discussion on Angle formation, measuring and types of angles.
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=== Prerequisites/Instructions, prior preparations, if any ===
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Knowledge about point, line, angle
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10 -15 minutes : Refreshment activity (related to language)
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=== Materials/ Resources needed ===
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===Prerequisites/Instructions, prior preparations, if any===
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Digital: Click here to [[:File:Intersection of two lines.ggb|open]] the file
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Prior understanding of points, Lines, rays and segment concepts
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===Materials/ Resources needed===
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*Digital : Computer, Geogebra application, projector.
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*Non-digital : Worksheet and pencil.
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===Process (How to do the activity)===
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'''Teachers work:'''
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demonstration to
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Non-digital: Paper, pencil, ruler, compass, protractor
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#Helps to identify intersecting lines (two or more) meet only at one point always and also can cross each other at a common vertex (which is the point of intersection).
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#Angle formation using sticks and in Geogebra and also labelling it - Hands-on activity (children can use two sticks to understand about angle formation)  - To help students to identify the angle formation in real life
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#How to measure an angle using protractor
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- Help to recognize the type of angle
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'''Students work:'''
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===Process (How to do the activity) ===
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{{Geogebra|haaj2yr5}}'''Procedure :'''  
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# What are intersecting lines?
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# Identify two lines cross each other in a plane i.e. lines 'g' and 'f' intersect at point 'A'
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# Identify intersecting lines (two or more) meet only at one point always and also can cross each other at common vertex (which is the point of intersection).
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# Identify the angles formed at common vertex 'A'
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# Identify two pairs of opposite angles
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# What is the vertically opposite angle?how many pair of vertically opposite angles are formed?
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# Identify and measure vertically opposite angles?What is your conclusion?
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# Can vertically opposite angles be adjacent?
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# How many pairs of adjacent angles are formed?
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# Idenify and measure adjacent angles?What is your conclusion?
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=== Evaluation at the end of the activity ===
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# Can two lines cross at two points?
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# If out of two angles of linear pair one is 60°, then what is the measure of other angle?
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# If two angles are vertically opposite angles, where the measure of one of the angles is 30°, then what is the measure of other angle?
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Go back - [[KVS Lines and Angles|click here]]
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-Identify and give some examples where they will see angles formation in our surroundings
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[[Category:Lines and Angles]]
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-Using 2 sticks they have to observe angle formation and measure it using protractor
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-Using Geogebra plot and name an angle
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-draw different types of angles in notebook and label it :Acute, Obtuse, Right, Complete and Straight angle.
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===Developmental Questions:===
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#When two segments are joined  at a point how many angles are formed?
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#How many angles are formed when two lines crossing each other?
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#How you name label and name the angles?
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#What  is the convention used to measure angles?
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#Does the angle depend on the segment length?
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#What are the different types of angles?
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===Refreshment activity:===
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'''Tongue twisters game'''
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Ask students to read the '''tongue twisters''' aloud. Then ask them to read anyone again but faster. Then ask them to read as fast as they can 10 times.
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1. Six silly sheep still asleep
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2. The big fat Cat sat on the Rat
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3. Billy blows big blue bubbles
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4. I scream, you scream, we all scream for Ice cream.
   
===Evaluation at the end of the activity===
 
===Evaluation at the end of the activity===
 
[https://karnatakaeducation.org.in/KOER/en/images/6/67/Worksheet_2_-_Angles_formation_and_its_types.pdf Worksheet 2 - Angles formation and its types.pdf]
 
[https://karnatakaeducation.org.in/KOER/en/images/6/67/Worksheet_2_-_Angles_formation_and_its_types.pdf Worksheet 2 - Angles formation and its types.pdf]
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'''[[:File:Intersection of lines and Angle Formation.odt|Download lesson]]'''
 
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