Difference between revisions of "Intersection of lines and Angle Formation"

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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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#
 
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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]]'''
 

Latest revision as of 20:21, 3 October 2021

Source: IT for Change

Objectives

To verify vertically opposite angles are equal

Estimated Time

20 minutes

Prerequisites/Instructions, prior preparations, if any

Knowledge about point, line, angle

Materials/ Resources needed

Digital: Click here to open the file

Non-digital: Paper, pencil, ruler, compass, protractor

Process (How to do the activity)

Download this geogebra file from this link.

Procedure :

  1. What are intersecting lines?
  2. Identify two lines cross each other in a plane i.e. lines 'g' and 'f' intersect at point 'A'
  3. 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).
  4. Identify the angles formed at common vertex 'A'
  5. Identify two pairs of opposite angles
  6. What is the vertically opposite angle?how many pair of vertically opposite angles are formed?
  7. Identify and measure vertically opposite angles?What is your conclusion?
  8. Can vertically opposite angles be adjacent?
  9. How many pairs of adjacent angles are formed?
  10. Idenify and measure adjacent angles?What is your conclusion?

Evaluation at the end of the activity

  1. Can two lines cross at two points?
  2. If out of two angles of linear pair one is 60°, then what is the measure of other angle?
  3. 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?

Go back - click here

Evaluation at the end of the activity

Worksheet 2 - Angles formation and its types.pdf

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