The longest chord passes through the centre of the circle

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Additional Information

Useful websites

1. www.regentsprep.com conatins good objective problems on chords and secants
   
2. www.mathwarehouse.com contains good content on circles for different classes
   
3. staff.argyll contains good simulations

Teaching Outlines

Concept #1 CHORD

Learning objectives

The students should be able to:

• Recall the meaning of circle.
  
• Define chord.
  
• State Properties of chord.
  

Notes for teachers

The teacher should clarify the meaning of chord and circle to the students

Activity No 1 Construction of chord

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• Estimated Time
  

10-15 minutes

• Materials/ Resources needed

1. circular paper cuttings
2. sketch pen
3. note book
4. pen

• Prerequisites/Instructions, if any

1. Meaning of chord.
2. Meaning of circle.
3. Meaning of circumference

• Multimedia resources

• Website interactives/ links/ / Geogebra Applets

• Process/ Developmental Questions

1. what is a chord?
2. The folded line connected from where to where?
3. How many chords can be drawn in a circle?

• Evaluation

1. was the effect of chord in a circle?
2. Was the student able to give the meaning of chord?

• Question Corner

1. how many chords can be drawn in a circle?
2. What happens to the size of the chord if it moves away from the centre?
3. If the chord pass through the centre of the circle what it are the properties of that chord?

Activity No #

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• 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

Activity No #

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• Estimated Time
• Materials/ Resources needed
• Prerequisites/Instructions, if any
• Multimedia resources
• Website interactives/ links/ / Geogebra Applets
• Process/ Developmental Questions
• Evaluation
• Question Corner

Activity No #

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• 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

Activity No #

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• Evaluation
• Question Corner

Activity No #

Click to Comment

• Estimated Time
• Materials/ Resources needed
• Prerequisites/Instructions, if any
• Multimedia resources
• Website interactives/ links/ / Geogebra Applets
• Process/ Developmental Questions
• Evaluation
• Question Corner

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