The longest chord passes through the centre of the circle
From Karnataka Open Educational Resources
Philosophy of Mathematics |
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Concept Map
Error: Mind Map file CIRCLE AND LINES.mm
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Textbook
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Additional Information
Useful websites
- www.regentsprep.com conatins good objective problems on chords and secants
- www.mathwarehouse.com contains good content on circles for different classes
- staff.argyll contains good simulations
Reference Books
Teaching Outlines
Concept #1 construction of chords
Learning objectives
The students should be able to:
- Recall the meaning of circle.
- Define chord.
- State Properties of chord.
- Construct chord of given size.
Notes for teachers
The teacher should clarify the meaning of chord and circle to the students
Activity No 1 Construction of chord
- Estimated Time
10-15 minutes
- Materials/ Resources needed
- circular paper cuttings
- sketch pen
- note book
- pen
- Prerequisites/Instructions, if any
- Meaning of chord.
- Meaning of circle.
- Meaning of circumference
- Multimedia resources
- Website interactives/ links/ / Geogebra Applets
- Process/ Developmental Questions
- what is a chord?
- The folded line connected from where to where?
- How many chords can be drawn in a circle?
- Evaluation
- was the effect of chord in a circle?
- Was the student able to give the meaning of chord?
- Question Corner
- how many chords can be drawn in a circle?
- What happens to the size of the chord if it moves away from the centre?
- If the chord pass through the centre of the circle what it are the properties of that chord?
Activity No #
- Estimated Time
- Materials/ Resources needed
- Prerequisites/Instructions, if any
- Multimedia resources
- Website interactives/ links/ / Geogebra Applets
- Process/ Developmental Questions
- Evaluation
- Question Corner
Concept #2.SECANT
Learning objectives
Notes for teachers
Activity No #
- Estimated Time
- Materials/ Resources needed
- Prerequisites/Instructions, if any
- Multimedia resources
- Website interactives/ links/ / Geogebra Applets
- Process/ Developmental Questions
- Evaluation
- Question Corner
Activity No #
- Estimated Time
- Materials/ Resources needed
- Prerequisites/Instructions, if any
- Multimedia resources
- Website interactives/ links/ / Geogebra Applets
- Process/ Developmental Questions
- Evaluation
- Question Corner
Concept #3.TANGENT
Learning objectives
Notes for teachers
Activity No #
- Estimated Time
- Materials/ Resources needed
- Prerequisites/Instructions, if any
- Multimedia resources
- Website interactives/ links/ / Geogebra Applets
- Process/ Developmental Questions
- Evaluation
- Question Corner
Activity No #
- Estimated Time
- Materials/ Resources needed
- Prerequisites/Instructions, if any
- Multimedia resources
- Website interactives/ links/ / Geogebra Applets
- Process/ Developmental Questions
- Evaluation
- Question Corner
Hints for difficult problems
Project Ideas
Math Fun
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