While creating a resource page, please click here for a resource creation checklist.
Error: Mind Map file polygons.mm not found
Textbook
To add textbook links, please follow these instructions to:
(Click to create the subpage)
Additional Information
Useful websites
Reference Books
Teaching Outlines
- Introduction to polygon
- Naming the polygons
- Characteristics of polygons.
- Types of polygons.
Concept #1. Introduction to polygons and nomenclature.
Learning objectives
Notes for teachers
Activity No # 1. Which polygon am I ?
- Estimated Time: 30 minutes.
- Materials/ Resources needed: Laptop, geogebra file, projector and a pointer.
- Prerequisites/Instructions, if any:
- The students should know that lines intersect to form figures.
- Plane closed figures with ≥ 3 sides are known as polygons .
- The intersecting points of two lines is known as a vertex and the lines are the edges/sides.
- The student should know the meaning of greek numerals uni, bi, tri ....etc.
- Multimedia resources: Laptop
- Website interactives/ links/ / Geogebra Applets
- Process:
- The teacher can tell the students that they are surrounded by many different kinds of shapes every day.
- Many of these shapes are two-dimensional plane figures.
- Plane figures are flat. They can be closed or not closed.
- Plane figures made up of three or more closed line segments are polygons.
- Each line segment of a polygon is a side. Polygons are classified and named based on the number of sides.
- How many vertices, sides and angles does this figure have ? Name the figure.
- What is the point of intersection of two lines called ?
- What parameters do you identify in each figure ? (side, vertex, angle, plane surface and area )
- What can you say about the number of vertices and the number of sides in each figure ?
- Which figure would you think will be formed if the number of sides is increased indefinately.
- What determines the side or edge of the figure ?
- Are the students able to corelate the names with the number of sides ?
- Are the students able to appreciate the nature of shapes formed with each increasing side?
- Students can discuss angle sum property in each case by dividing the figure into triangles or quadrilaterals.
- A hexagon is a polygon with _________ angles.
- Is circle a polygon ?
- What is a polygon with 12 sides called ?
- You have a collection of sides from triangles and decagons. The total number of sides is 100 and you have 4 decagons. How many triangles do you have ?
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. Characteristics of polygons
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. Types of polygons
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
Usage
Create a new page and type {{subst:Math-Content}} to use this template