Basic Technology

JSII First Term Loading…..

Basic Technology

JSII Second Term Loading…..

BASIC TECHNOLOGY
JS II THIRD TERM
SUB-THEME: TOOLS MACHINES AND PROCESSES

WK 1 Belt and Chain Drives I
Students should be able to:
(1) describe belt and chain drives.
(2) explain the principle of belt and chain drives.

Content
(1) Examples of belt and chain drives
(2) Application of belt and chain
drives.
Teacher: (1) Shows pictures of various types of belt and chain drives
(2) take students of factories and workshops where belt and chain drives are used (3) Explain the principles behind the operations of the drives.
Students: (1) Listen attentively to teacher explain actions (2) Examine various machines that operate on belt and drives and identify their components. (3) Participates in class discussions and activities (4) Prepare field trips reports.

Teaching aids
(1) Pictures of motor driven pepper grinder, motor fan belt, sewing machine etc.
(2) Bicycles and motor chain drives
(3) Pictures of chain and belt driven machines

WK 2 Belt and chain drives II
Students should be able to:
state the advantages and disadvantages of belt and chain drives.

Content
Advantages and disadvantage of belt and chain drives
Teacher: (1) Moderates class discussion of the advantages and disadvantage of belt and chain drives
Listen attentively to teacher explanation.

Teaching aids
Picture of chain and belt driven machines.

WK 3-4 Hydraulic and Pneumatic Machines
Students should be able to:
(1) define Hydraulic. and pneumatic
machines
(2) identify hydraulic and pneumatic machines
(3) name the components of each machine

Content
(1) Hydraulic and pneumatic machines
(2) Examples of hydraulic and pneumatic machines
(3) Components of the machine
Teacher: (1) Displays hydraulic and
pneumatic machines/devices.
(2) Explains the working principles of
hydraulic and pneumatic machines
Students: (1) Examine the machines displayed and identify their components. (2) Listen to the teacher’s explanation (3) Ask and answer questions.

Teaching aids
Hydraulic and pneumatic machines e.g. force pump, double acting pumps
centrifugal pump, hydraulic jacks, simple garden sprinkler, reaction
turbine, water wheels etc.

WK 5 Hydraulic and Pneumatic machines II
Students should be able to:
(1) explain the principles behind the working of hydraulic and pneumatic
machines/devices.
(2) state the uses of the machines.
Operations and uses of hydraulic and
pneumatic machines.
Teacher: (1) Explains the working principles of hydraulic and pneumatic machines. (2) Demonstrate with real components and other instructional media. (3) Demonstrate their uses.
(4) Emphasize their applications.
Students: (1) Examine the machines displayed and identify the components. (2) Listen to teacher’s explanation. (3) Demonstrate with teacher. (4) Ask and answer questions.

Teaching aids:
Hydraulic and pneumatic devices e.g. force pump, double active pump
centrifugal pumps, hydraulic jack, simple garden sprinkler, reaction
turbine etc.

WK 6 Gears I

Students should be able to:
(1) define gear
(2) identify different types of gears.
(3) state the use of the various types of
gear in a mechanical system.

Content
(1) Definition of gear
(2) Types of gear: internal gear, external gear and level gear
(3) Uses of gears:

-Power transmission
-Changing direction
-Selecting speed.
Teacher: (1) Displays gear system for inspection by students (2) Guides students to examine the different types of gear in machines found in
the school (3) Explain the uses and functions of:
-Gear in machines
-Lubricants
Students: (1) Observe gears in bicycles, cars, cranes and hoist
(2) Open the back of an old clock and
examine the gears in the clock
(3) Participates in the class discussion

Teaching aids
(1) Cardboard
(2) Soft wood
(3) Bicycles
(4) Old clock
(5) Machines in school workshop
(6) school workshop

WK 7 Gears II

Students should be able to:
determine gear ratios.

Content
Gear ratios and speed rotation.
Explains gear ratios and speed rotation
Listen attentively and participates the
class discussion

Teaching aids
(1) Bicycles
(2) Different sizes of old clock gears

WK 8 Gears III

Students should be able to:
describe the relationship between gear ratio and speed of rotation, Gear ratios and speed rotation.
Teacher: Explains the relationship between gear ratios and speed of rotation.
Students: (1) Participates actively in the class discussions (2) Calculate gear ratio.

Teaching aids
(1) Bicycles
(2) Sizes of old clock gears

WK 9 Gears IV

Students should be able to:

state the functions of lubricants in
gears.

Content
Functions of lubricants in gears
Teacher: Explain the uses and functions of:
-Gears in machines
-Lubricants in gears
Students: Participates in class
discussions
(1) Machine parts (Gear)
(2) Oil

WK 10 Gears V

Students should be able to:
(1) construct a gear system.
(2) use it for a demonstration class.

Content
(1) Construction of a gear
(2) Demonstrate the use.
Teacher: Construct gears with cardboard or ply wood and demonstrates the use
Students: Participates in the practical exercise.

Teaching aids
(1) Saw, or knife.
(2) Ply wood or cardboard paper.
(3) Hole borer.

11 REVISION
12 EXAMINATION

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