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SENIOR SECONDARY (TECHNOLOGY)

TECHNICAL DRAWING

SS 1 FIRST TERM

WEEK

TOPIC/CONTENT

ACTIVITIES

1

DRAWING MATERIALS AND EQUIPMENT

Definition of Technical drawing, Identification and uses of drawing method and equipment e.g. protractor, compasses, set – squares, Tee – square, drawing board etc.



Teacher explains the term technical drawing.

-Show and identify drawing materials and equipment e.g. Protractor, compasses, set – square drawing sheets. Etc

-Demonstrates how these materials and instruments are used.

Identify drawing materials and equipment

-Use drawing materials and equipment to draw.

Drawing Instrument.




2

BOARD PRACTICE

Technique of fixing drawing sheet to the drawing board, boarder line, title block and free hand lettering (lower and upper case letters).





-Demonstrates how to fix the drawing sheet to the board

- Demonstrate the techniques of drawing boarder line and title block.

-Demonstrate the techniques in lettering; e.g. Gothic, italic etc.

Fixing drawing sheets to the board

-Drawing bounder line and writing letters.

Drawing board, tee – square, pencil and sharpeners.




3

SAFE WORKING HABITS

Safe use and care of drawing instruments and materials, clean habits, proper lighting and ventilation.



- Demonstrate safe handing of drawing instruments and materials e. g Board, Tee – square, Pencils etc.

-Demonstrate healthful habits in the drawing studio, such as,

(a) No horse play

(b) No throwing of instruments, (Compasses and divides)

Observe and practice self handling of drawing instruments and materials

-Practice health habits in the drawing studio

Drawing instruments, Videos chips, posters and charts.


4

LINES AND LINE WORK.

Types and uses of line (thin continuous line, thick continuous line, thin long – chain line, thick long drain line etc.) Drawing of parallel and unchained lines.



-Teacher displays types of lines and explains their uses e.g. (a) thin long chain line for center line

(b) Thin continuous line for projection, construction and dimension line.

(c) short dashes for hidden details

-Draw types of line

Construct parallels indeed lines using Tee – square and set square

Tee – square drawing bound, set square straight edge, pair of compasses, pencil. etc





5

LINES AND LINE WORK

Bisection and division of lines



- Demonstrate how to bisect a given line

- Demonstrate how to divide a given line into a number of equal parts.

- Demonstrate how to draw a parallel line using a pair of compasses.

Bashed a given line

Pencils, paper compasses etc.


6

ANGLES AND TRIANGLES

Types of angles construction and division:

(a) acute

(b) obtuse

(c) reflex etc.


-Displays and describe types of angles

- Demonstrate how to construction various types of angles using compasses.

- Demonstrate how to bisect angles.

Constitution angles acute, reflex, obtuse.

Etc.

Models, posters charts, drawing instruments and materials.




7

ANGLES AND TRIANGLES

Types of triangles and their construction such as:- isosceles, equilateral, scalene and right angled triangle.




-State types of triangles and demonstrate their construction.

-construction of triangles when:-

(a) given two sides and one angle

(b) two angles and one side

(c) three sides.

Identify triangles

-constitution triangles

Models, charts posterns and drawing instruments.





8

CIRCLE AND TRIANGLES

Circle and its parts.

e.g. chord, tangent, sector quadrant, radius etc.


-Describes the term circle and nits parts

-using chart, illustrate eccentric and concentric circles.

Draw a circle and label its parts.

Drawing instruments and materials.




9

CIRCLE AND TRIANGLES

Inscription, circumscription and ascription of triangles



Describes the construction of

(a) inscribed circle to a given triangle

(b) circumscribed circle to a give triangle

(c) ascribed circle to a given triangle

inscribed, circumscribed and ascribed circles

Drawing instrument and materials.

Inscribed, circumscribed and ascribed circles

Drawing instrument and materials.




10

QUADRILATERALS

Definition, types and properties e.g. square, rectangle kite, parallelogram etc.




-Explain properties and types of quadrilaterals

11

QUADRILATERALS

Construction of quadrilaterals

e.g. square, rectangle, kite, parallelogram etc.


Demonstrate construction of various quadrilaterals.

Participate in class discussion

-construction different types of quadrilaterals.

Pair of compasses, tee- square drawing bound, straight edge, models charts and posters.



12

Revision

Revision

13

Examination

Examination

14

Examination

Examination

TECHNICAL DRAWING

SS 1 SECOND TERM

WEEK

TOPIC / CONTENT

ACTIVITIES

1

POLYGONS DEFINITION TYPES AND PROPERTIES

(a) Regular and triangular

(b) Pentagon, hexagon heptagon etc.


-The Teacher explains the tem polygon and their properties (regular and irregular)

-Heptagon seven sides, hexagon – six etc

Student Activity

Participate activity in class discussion

Teaching Materials

Models, chants, pastes and drawing materials.





2

POLYGONS

Construction of various types of polygons. Using different methods



-Demonstrates the construction of

-avegular polygons using different methods e.g.

(a) Square Method

(b) circle Method

(c) Diagonal Method etc.

Construct polygons using different methods

Models, Charts, posters and Drawing Instrument.


3

SCALES AND ITS USES:- construction of scales (plain and diagonal)

Explain the use and types of scales

-illustrates the constriction of scales

-Explain how to road plain and diagonal scales

-participate in the discussion

-observe and construct plain and diagonal scales.

-Read illustrated plain diagonal scales

Scale, Drawing bound and tee – square.


4

ENLARGEMENT AND REDUCTION

The concept and application of enlargement and reduction.



Explains the concept of enlargement and reduction of plane figure

-explains the application of enlargement and reduction.

Participate in class discussion

Charts, posters and models




5

ENLARGEMENT AND REDUCTION

Enlargement and reduction of regular and irregular plane figures:- in style, quadrilaterals polygons etc.




Demonstrates the conduction of reduction and enlargement of an object to a given ratio.

Carry out excise on enlargement and reduction of give figures

Drawing board, tee square, fair of compasses charts, posters and models.


6

EQUAL AREAS OF SIMILAR FIGURES

Theorems of equal areas.

E.g. triangles on the same base and between parallel line have equal areas

-Explains the theorems of equal areas using triangles on the same base and between parallels have equal areas.

Discuss theorems of equal areas

Charts and posters


7

EQUAL AREAS OF SIMILAR FIGURES

Constitution plane figures of equal area e.g. triangles, quiche laterals and polygons

Demonstrates the constriction of plane figures of equal areas

Construct plane figures of equal areas

Drawing instrument, charts, and posters.




8

TANGENTS AND TANGENCY

Principles and application of Tangency.

Construction

of talents to :-

(a) point on the circumference of the circle

(b) two equal and unequal circles




The teacher explains the principles and application of tendency.

Demonstrates the construction of tangents of arcs to straight line.



9

TANGENTS AND TANGENCY

Construction of tangents involving arcs (internal and external)



Demonstrates the construction of tangents e.g. arcs touching internally and externally.

Conspired tangents involving touching

Internally and externally

Drawing instruments and materials




10

Revision

Revision

11

Examination

Examination

12

Examination

Examination

TECHNICAL DRAWING

SS 1 THIRD TERM

WEEK

TOPIC / CONTENT

ACTIVITY

1

SPECIAL CURVES:- Locus, definition (eclipse, cycloid, trochoids etc)

Construction of special curves using different methods



Teacher defines;

i) eclipse

ii) cycloids

iii) trochoids etc

The teacher demonstrate various method of constructing special curves:-

Participate actively in the definition of special curves

Construct eclipse, cycloids and trochoids using different methods:-

Models, chart, posters and drawing instrument.




2

TRUE LENGTH AND SURFACE development:-

-Meaning and applications of development

-Determination of true lengths.


Explains development and its applications

Demonstrates how to determine true lengths of full and truncated solids:-

Discuss the meaning and application of development. Determine true lengths:-

Models, charts, posters, drawing instrument, card board, pair of scissors/knife



3

TRUE LENGTHS AND SURFACE development:-

Surface developments of fill and truncated solids, e.g.

a) cones

b) pyramids

c) prisms

d) cylinders etc.




Demonstrate the surface development of full and truncated solids using parallel lines, radial lines and triangulation method:-

Develop the surface of full and truncated cones, pyramids and cylinders:-

Drawing instrument


4

TRUE LENGTHS AND SURFACE development:-

Production of models of geometrical solids e.g.

a) prisms

b) cones


c) cylinders etc



Demonstrates the methods of producing models of geometrical solids:-

Develop models of geometrical solids:-

Drawing instrument, card boards, pair of scissors/knife


5

METHODS OF DIMENSIONING:-

i) circles

ii) arcs

iii) chamfers

iv) vertical

v) horizontal and angular shapes




Demonstration methods of placing dimensions on drawing e.g.

i) datum and

ii) chair dimensioning :-

dimension drawing:-

drawing instruments


6

ISOMETRIC DRAWING :-

Concept of isometric drawing

a) definition

b) isometric axis

c) three dimensional drawing etc.


Explains isometric axis and drawing,(30o):-

Participate actively in class discussion:-

Models, charts, posters, 30o/60o set square, drawing materials


7

ISOMETRIC DRAWING :-construction of isometric square, rectangle, and circle

Demonstrate the drawing of isometric square, using30o/60o set –square and drawing instrument :-

Draw isometric squares, rectangle and circles:-

Models, charts, posters, 30o/60o set-square drawing materials and instruments.


8

ISOMETRIC DRAWING :-

Construction of simple blocks in isometric drawing



Demonstration of isometric circles and simple blocks

Draw isometric block involving lines, arcs and circles:-

Drawing instruments and materials.


9

OBLIQUE DRAWING :-

Meaning of oblique drawing, oblique drawing of shaped and geometrical solids



Explain oblique drawing

Demonstrate the drawing of shaped blocks and geometrical solids in oblique using

a) cabinet and

b) cavalier methods:-

differentiate between isometric and oblique drawing

draw shaped blocks and geometrical solids in oblique:-

drawing instruments and materials.


10

INTRODUCTION TO COMPUTER GRAPHICS:- the use of computer in lettering and drawing


Demonstrate the use of computer for lettering, drawing lines, angles, planes figures, pictorial drawings, enlargement and reduction of figures:-

The use of computer in lettering and drawing:-

Corel draw and Harvard graphics


11

Revision

Revision

12

Examination

Examination

13

Examination

Examination

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