Difference between revisions of "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. | 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. | ||
| Line 24: | Line 27: | ||
'''-Formation of angle''' | '''-Formation of angle''' | ||
| − | + | * Use the file to demonstrate formation of angle | |
| − | Use the file to demonstrate formation of angle | + | * Ask how segments rotation changes angle |
| − | + | * Ask how many angles are formed | |
| − | Ask how segments rotation changes angle | ||
| − | |||
| − | Ask how many angles are formed | ||
| − | |||
'''-Measure angles''' | '''-Measure angles''' | ||
| − | + | * How do you measure this angle | |
| − | How do you measure this angle | + | * Measure both angles as the children say |
| − | + | * Ask if there is any difference in the angle measures | |
| − | Measure both angles as the children say | + | * Mention the convention of clockwise/anticlockwise measurement |
| − | + | * Mention reflex/exterior angle | |
| − | Ask if there is any difference in the angle measures | + | * Is there a relation between the two angles measured |
| − | |||
| − | 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''' | '''-Angle measure independent of segment length''' | ||
| − | + | * Does the angle depend on the segment length – drag the line segments to show. | |
| − | Does the angle depend on the segment length – drag the line segments to show. | ||
| − | |||
'''Evaluation at the end of the activity''' | '''Evaluation at the end of the activity''' | ||
* What are the different types of angles? | * What are the different types of angles? | ||
| Line 54: | Line 44: | ||
* What is the measure of the total angle formed at a point is? | * What is the measure of the total angle formed at a point is? | ||
* What is the convention used to measure angles? | * What is the convention used to measure angles? | ||
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| + | [[Category:Lines and Angles]] | ||
Latest revision as of 07:26, 20 August 2023
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 : "Introduction to angle formation”
Download this geogebra file from this link.
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?