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CONCEPT OF Geometrical structures
FOR middle school LEVEL
My student from VIII(ramesh prasad badoni)
Objectives
1. To imagine a structure or shape of an object.
2. to start the drawing of the imagined object.
3. to draw the various possible shapes of the objects in their surroundings.
4. to apply these shapes to understand the dimensions
5. to get an idea of formation of line, area and volume of the structure formed.
imagination of a structure
regular shapes irregular shapes
cloudcloud
leaf
leaf
stone
regular shapes irregular shapes
circle
trapiz
cuboid
cylind octagonal
rectangle
trianglecone
Thought process
Formation of a structure by combination of number of dot at a surface
What is a dot or a point
dots combinations at a surface
It is an imaginary mark where from a unit formation takes place
Role of a dot
joining of dots means formation of --- Line
line
formation of axesX
X
X
X’
X’
Y
Y
Z
XX’
Y
Y’
Dimensions
One dimensions or 1-D
Two dimensions or 2-D
Three dimensions or 3-D
Line
Area
Volume
What is a volume
When an area revolves or moves about a line or surface means volume is formed
area
area
volume
Now what is a line
line is the fundamental unit-cell to form a structure/shape.
that means when a line moves about a dot it develops a geometrical shape-----
AREA
rectangle
circle
AREA
LINE
Formation of various structures
Triangle
cuboids
cube
II-gram
cylinder
formation of regular shapes from irregular shapes
Area
AREA
AREA
formation of two and three dimensional figures-
EXAMPLES
Applications
world of geometrical shapes
some more interactions
capsules
filling of cylinder
