SPPECC_Basic-Geometrical-Shapes Grade 1.pptx

Basic Geometrical Shape

1. Basic Geometrical Shapes

2. Look around you, can you see different shapes from different objects? Everything you see has its own shape. Look at the window? What shape do you see? At your door or your computer monitor. Shapes are everywhere. But how these shapes are formed?

3. Learning Objectives: Know how shapes are formed Identify two-dimensional figures Identify three-dimensional figures

4. Geometry is a branch of mathematics that studies about points, lines, shapes and dimensions of things. We study geometry for us to develop foundational skills such as thinking skills, logic and analysis. Geometry

5. Almost everywhere you find geometry. Look at your house, carpenters, engineers and architects all use geometry to build awesome houses. Even in your toys, toy makers use geometry to manufacture safe and fun toys that you can enjoy.

6. How shapes are formed?

7. A point is the most fundamental object in geometry and is represented by a dot. A dot is a small rounded mark or spot. Point

8. If you put several points together, you will start to form a line. Lines are points that is connected extending infinitely far in two directions. Lines can be straight or curve. Line

9. If you combine some lines, you may form a shape. It is considered a shape when a space is enclosed by an outline. Shape

10. If you combine some lines, you may form a shape. It is considered a shape when a space is enclosed by an outline. Shape

11. 2-dimensional shape 3-dimensional shape Shape

12. Two-dimensional figures are closed shapes formed using a straight or a curve line. It can be referred to as a plane. A plane is a flat surface with no thickness. It can be measured with length and width. 2-dimensional Shape

13. A square is a 2D shape with four sides and four corners. All sides of a square are equal in length. S quare

14. A circle is a 2D shape with no corner. Circle

15. Triangles have three sides and three corners. Triangle

16. Rectangles also have four sides and four corners. But unlike the square, rectangles have 2 pairs of equal sides. Rectangle

17. Ovals are like circles. The difference is that they are elongated. Oval

18. It is a 2D shape with four sides. Same as the square, diamond's side is all equal, but it has 2 pairs of equal angles (corners). Diamond

19. Three-dimensional shapes are formed with combined lines and planes. It has thickness and can be measured with length, height and width. 3D shapes have 3 parts: the faces , edges and corners. 3 -dimensional Shape face edge corner

20. Cubes are 3D figures bounded by six square faces. It has 8 corners and 12 edges. Cube

21. A 3D figures whose two end faces are similar, equal and parallel. Prisms can be classified according to the shape of their opposite faces. Prism

22. A pyramid has a polygonal base and an apex. They can be classified according to the shape of their base. Pyramid Apex Polygonal Bases

23. Cylinder is a 3D shape that have 2 opposite Circular bases and a curved surface. Cylinder circular bases curved surface

24. Cone is like a combination of a pyramid and a cylinder. It has a circular base, a curved surface and an apex. Cone circular base curved surface apex

25. Spheres are geometrical object in three-dimensional space that is completely round like a ball. They have a curved surface. Sphere curved surface