Line 44: |
Line 44: |
| # Introduce concepts of exterior angle. | | # Introduce concepts of exterior angle. |
| * '''Pre-requisites''' | | * '''Pre-requisites''' |
− | Prior knowledge of point, lines, angles, parallel linesResources needed | + | # Prior knowledge of point, lines, angles, parallel linesResources needed |
| * '''Resources needed''' | | * '''Resources needed''' |
| # Digital : Computer, geogebra application, projector. | | # Digital : Computer, geogebra application, projector. |
Line 70: |
Line 70: |
| # To understand the elements of a triangle | | # To understand the elements of a triangle |
| * '''Pre-requisites''' | | * '''Pre-requisites''' |
− | Prior knowledge of point, lines, angles, parallel lines | + | # Prior knowledge of point, lines, angles, parallel lines |
| * '''Resources needed''' | | * '''Resources needed''' |
| # Digital : Computer, geogebra application, projector. | | # Digital : Computer, geogebra application, projector. |
Line 139: |
Line 139: |
| |} | | |} |
| * '''Evaluation at the end of the activity''' | | * '''Evaluation at the end of the activity''' |
− | 1. Have the students been able to identify the elements in a triangle?
| + | # Have the students been able to identify the elements in a triangle? |
− | | + | # Have they been able to extrapolate any connection between the angle and side in a triangle? |
− | 2. Have they been able to extrapolate any connection between the angle and side in a triangle?
| |
| [[Category:Triangles]] | | [[Category:Triangles]] |
| [[Category:Class 9]] | | [[Category:Class 9]] |
Line 175: |
Line 174: |
| # Understand the relation between various angles that are formed in a triangle. | | # Understand the relation between various angles that are formed in a triangle. |
| * '''Pre-requisites''' | | * '''Pre-requisites''' |
− | Prior knowledge of point, lines, angles | + | # Prior knowledge of point, lines, angles |
| * '''Resources needed''' | | * '''Resources needed''' |
| # Digital : Computer, geogebra application, projector. | | # Digital : Computer, geogebra application, projector. |
Line 237: |
Line 236: |
| # Recognize the triangles based on the measures of the sides | | # Recognize the triangles based on the measures of the sides |
| * '''Pre-requisites''' | | * '''Pre-requisites''' |
− | Prior knowledge of point, lines, angles, elements of triangle | + | # Prior knowledge of point, lines, angles, elements of triangle |
| * '''Resources needed''' | | * '''Resources needed''' |
| # Digital : Computer, geogebra application, projector. | | # Digital : Computer, geogebra application, projector. |
Line 286: |
Line 285: |
| # Recognize the triangles based on the measures of the sides | | # Recognize the triangles based on the measures of the sides |
| * '''Pre-requisites''' | | * '''Pre-requisites''' |
− | Prior knowledge of point, lines, angles, elements of triangle | + | # Prior knowledge of point, lines, angles, elements of triangle |
| * '''Resources needed''' | | * '''Resources needed''' |
| # Digital : Computer, geogebra application, projector. | | # Digital : Computer, geogebra application, projector. |
Line 344: |
Line 343: |
| # To help visualization of the geometric proof | | # To help visualization of the geometric proof |
| * '''Pre-requisites''' | | * '''Pre-requisites''' |
− | Prior understanding of point, lines and angles, adjacent angles, vertically opposite angles, linear pair, parallel lines, alternate angles, corresponding angles. | + | # Prior understanding of point, lines and angles, adjacent angles, vertically opposite angles, linear pair, parallel lines, alternate angles, corresponding angles. |
| * '''Resources needed''' | | * '''Resources needed''' |
− | 1. Digital : Computer, geogebra application, projector.
| + | # Digital : Computer, geogebra application, projector. |
− | | + | # Non digital : Worksheet and pencil. |
− | 2. Non digital : Worksheet and pencil.
| + | # Geogebra files : |
− | | + | ## '''“7a. Angles in a right triangle.ggb” ,''' |
− | 3. Geogebra files : '''“7a. Angles in a right triangle.ggb” ,'''
| + | ## '''“7b. Angle sum property proof.ggb” ,''' |
− | | + | ## '''“7c. Angle sum property of a triangle.ggb”''' |
− | '''“7b. Angle sum property proof.ggb” ,''' | |
− | | |
− | '''“7c. Angle sum property of a triangle.ggb”''' | |
| * '''How to do''' | | * '''How to do''' |
| # Use the file - “7a. Angles in a right triangle.ggb” | | # Use the file - “7a. Angles in a right triangle.ggb” |
Line 410: |
Line 406: |
| === '''Activity No # 8 : Relation between interior and exterior angles in a triangle''' === | | === '''Activity No # 8 : Relation between interior and exterior angles in a triangle''' === |
| * '''Objectives''' | | * '''Objectives''' |
− | 1. To show interior angles of a triangle have a relation with its exterior angles.
| + | # To show interior angles of a triangle have a relation with its exterior angles. |
| * '''Pre-requisites''' | | * '''Pre-requisites''' |
− | Prior understanding of point, lines and angles, adjacent angles, vertically opposite angles, linear pair | + | # Prior understanding of point, lines and angles, adjacent angles, vertically opposite angles, linear pair |
| * '''Resources needed''' | | * '''Resources needed''' |
− | 1.Digital : Computer, geogebra application, projector.
| + | # Digital : Computer, geogebra application, projector. |
− | | + | # Non digital : Worksheet and pencil. |
− | 2. Non digital : Worksheet and pencil.
| + | # Geogebra files : |
− | | + | ## '''“8a. EA= Sum of opposite IAs in a triangle proof.ggb” ,''' |
− | 3. Geogebra files : '''“8a. EA= Sum of opposite IAs in a triangle proof.ggb” ,'''
| + | ## '''“8b. EA= Sum of opposite IAs in a triangle.ggb” ,''' |
− | | + | ## '''“8c. EA= Sum of opposite IAs in a triangle demo.ggb”''' |
− | '''“8b. EA= Sum of opposite IAs in a triangle.ggb” ,''' | |
− | | |
− | '''“8c. EA= Sum of opposite IAs in a triangle demo.ggb”''' | |
| * '''How to do''' | | * '''How to do''' |
| # In the triangle students should identify the angles of the triangle. | | # In the triangle students should identify the angles of the triangle. |
Line 467: |
Line 460: |
| |} | | |} |
| * Evaluation at the end of the activity | | * Evaluation at the end of the activity |
− | 1. Have the students able to identify the relation between exterior and interior opposite angles of a triangle?
| + | # Have the students able to identify the relation between exterior and interior opposite angles of a triangle? |