Triangles
Concept Map
Additional Resources
OER
- Web resources:
- Wikipedia, the free encyclopedia : The website gives a comprehensive information on triangles from basics to in depth understanding of the topic.
- cbsemathstudy.blogspot.com : The website gives worksheets for the chapters that can be downloaded. Worksheets for other chapters can also be searched for which are listed based on class.
- Books and journals
- Textbooks
- NCERT Textbooks – Class 9
- Karnataka Govt Text book – Class 8
- Syllabus documents
Non-OER
- Web resources:
- Bright hub education : The website describes a lesson plan for introducing triangles and lists classroom problems at the end of the lesson that can be solved for better understanding.
- CPALMS : The website gives lesson plan, activities and worksheets associated with triangles.
- Books and journals
- Textbooks
- Syllabus documents (CBSE, ICSE, IGCSE etc)
Learning Objectives
- Identifying a triangle and understanding its formation
- Recognizing all parameters related to triangles
- Understanding formation of triangles based on sides and angles
- Establishing relationship between parameters associated with triangles
Teaching Outlines
Concept 1: Formation of a triangle, elements of a triangle and its measures
Formation of a geometric shape with minimum number of lines is introduced.The key geometric concepts that are associated with it and its properties are elaborated.
Activities
Formation of a triangle: A plane figure formed by three intersecting lines.
Elements of a triangle: Terms that are associated with triangle.
Measures in triangle: Parameters that are measured in a triangle.
Interior and exterior angles in triangle: Angles formed when a triangle is formed.
Concept 2: Types of triangles based on sides and angles
Triangles can be based on its elements such as sides and angles. Students are able to recognize these formations.