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From Karnataka Open Educational Resources
182 bytes added
, 09:03, 4 November 2019
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| + | A chord is the interval joining two distinct points on a circle. This activity investigates formation of chord and compares with the diameter of the circle. |
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| === Objectives === | | === Objectives === |
| Understand chords as elements of a circle | | Understand chords as elements of a circle |
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| * Digital : Computer, geogebra application, projector. | | * Digital : Computer, geogebra application, projector. |
| * Non digital : Worksheet and pencil, compass, strings | | * Non digital : Worksheet and pencil, compass, strings |
− | * Geogebra files : Introduction to chords.ggb | + | * Geogebra files : [https://ggbm.at/caezkayv Introduction to chords.ggb] |
| + | {{Geogebra|caezkayv}} |
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| ===Process (How to do the activity)=== | | ===Process (How to do the activity)=== |
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| * Mark any two points on the circumference of a circle, join the two points. What is this line? | | * Mark any two points on the circumference of a circle, join the two points. What is this line? |
| * Establish chord. | | * Establish chord. |
− | * Move the points to show how the chord length varies. Ask students to observe the changing chord lengths and when the chord length is maximum. Compare chord length with diameter. | + | * Move the slider to show how the chord length varies. Ask students to observe the changing chord lengths and when the chord length is maximum. Compare chord length with diameter. |
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| * How many parts is the circle divided into by the chord? What do you notice about these two parts? | | * How many parts is the circle divided into by the chord? What do you notice about these two parts? |
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| {| class="wikitable" | | {| class="wikitable" |
| |Circle | | |Circle |
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| |Chord | | |Chord |
| |Chord Length | | |Chord Length |
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| |} | | |} |
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| + | [[Category:Circles]] |