SHAPES AND PATTERNS GRADE 3.

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Presentation transcript:

SHAPES AND PATTERNS GRADE 3

Hello, How are you doing? Today, we are going to start a new lesson on Shapes and patterns.

2- Dimensional Figure A figure that has only length and width is defined as 2-dimensional figure. Example – Square, rectangle

2-Dimensional Figures Different 2 – Dimensional Figures are –  Square  Rectangle  Triangles  Circles

Open and Closed Figure Open Figure – A figure have ends that do not meet. Closed Figure – A figure have begins and ends that meet. Open figure Closed figure

Polygons Polygons are closed figures with straights sides. Different Polygons are –  Pentagon  Hexagon  Octagon

Pentagon A Pentagon is a polygon that has 5 sides and 5 angles. side

Hexagon and Octagon Hexagon - A hexagon has 6 sides and 6 angles. Octagon – An octagon has 8 sides and 8 angles. Hexagon Octagon

2- dimensional figures Square – A four sided figure with all equal sides and 4 angles. Rectangle – A four sided figure with opposite sides equal and 4 angles. Square Rectangle

Triangle – A three sided figure with 3 angles is called a triangle. Circle – A 2-dimensional figure that has no side. Triangle Circle

Which is the 2-dimensional figure? Answer- B and C A BC

Name the following a) A polygon with 3 sides. b) A polygon with 5 sides.

What is the name given to the following shapes?

Name the 2-dimensional figures in the following map.

ASSESSMENT

1.Name the following figures. a) 3 sided figure with 3 angles b) 6 sided figure

2.Name the figures in green and yellow color.

3.Choose the open figure. A B CD

4.How many equal rectangles are there in the given figure?

5.What is the shape of sun?

6.What shapes can be seen in the flag of Guinea?

7.Complete the following table. FigureNumber of sides Triangle Rectangle Square

8.Which of the following 2- dimensional figure has all equal sides? a) Rectangle b) Square c) polygon

9.How many triangles are shown in the figure given below?

10.Name all the 2-dimensional figures in the figure shown below.

Recap  2 – dimensional figures  Open and Closed figure  Polygons  Square and rectangle  Triangle and circle  Solved Examples  Practice Problems

Good Work! Now practice the worksheets on the lesson.