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,(30^{o}):
Participate actively in class discussion:
Models, charts, posters, 30^{o}/60^{o} set square, drawing materials

7

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

Demonstrate the drawing of isometric square, using30^{o}/60^{o} set –square and drawing instrument :
Draw isometric squares, rectangle and circles:
Models, charts, posters, 30^{o}/60^{o} setsquare 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

Share with your friends: 