Conduct experiment to demonstrate the operations of rectifier/filter circuits.

11

Revision

Revision

12-13

Revision

Revision

14

Examination

Examination

BASIC ELECTRONICS

SS 1 FIRST TERM

WEEK

TOPIC/CONTENT

ACTIVITIES

1

ELECTRIC CURRENT

Structure of atom

Teachers explain the structure of atom. Students draw the structure of atom chart showing structure of an atom.

2

CONDUCTORS AND INSULATORS

Teacher; defines and explains conductors and insulators. List examples of conductors and insulators.

Students; draw the structure of an atom in conductors and insulators.

2. Distinguish between conductors and insulators, participate in class discussion.

Instructional Materials; Copper, wire, pieces of wood or rubber.

3

APPLICATION OF CONDUCTORS AND INSULATORS.

Teacher leads the discussion on various uses of conductors and insulators. Students identify various objects made of conductors and insulators or charts showing materials made of insulators and conductors.

4

ELECTRIC CURRENT

Direct and alternating current.

Teacher; defines and explain with relevant diagrams, direct and alternating current (AcaDc). Students to distinguish between asking and answering question .

Instructional Materials; Dry cells, battery charts showing various sources of alternating current.

5

ELECTRIC CURRENT

Differences between current (D.C) and alternating current

Teacher; guides the students to distinguish between direct and alternating current.

Students; state the difference between direct and alternating current.

Instructional Materials; dry cells, batter, charts, showing various sources of alternating current.

6

ELECTRIC CURRENT

Sources of direct and alternating current.

Teacher; explains sources of direct and alternating current.

Students; mention two sources of alternating current.

Instructional Materials; Dry cells, battery, charts, showing various sources of alternating current.

7

RELATIONSHIP BETWEEN VOLTAGE CURRENT AND RESISTANCE.

Current, voltage, and resistance

Teacher; defines and explains current, voltage and resistance. Students; define current voltage and resistance.

8

RELATIONSHIP BETWEEN VOLTAGE, CURRENT AND RESISTANCE

Measurement of voltage, current and resistance.

Teacher; state units, symbols, and instruments for measuring voltage, current, and resistance. Demonstrates using instrument to measure voltage, current and resistance (practical).

Students; to measure current, voltage and resistance.

Teacher; states the relationship between power, current and voltage (P=IV).

Students; state the formula for guiding power. Calculate power in given circuit.

Instructional Materials;Calculator, charts containing power formulas.

3

ELECTRIC POWER

Deriving power for electric power, and calculation of power in given circuits.

Teacher; derives other formula for finding power. E.g P=I^{2 }R, etc, units.

Students; calculate power in given circuits. E.g. calculate power expanded in a circuit of voltage 240V and current 10 Amps. Calculator, chart containing power formulas.

Teacher; calculate power in given circuits.

Students; calculates power in given circuits.

Instructional Materials; Calculator, charts containing power formulas, circuit diagrams.

4

CIRCUIT COMPONENTS

Concept of resistors.

Symbols, sign and unit of resistance.

Teacher explains the concepts of resistors, types of resistors.

Students listen attentively.

Identify various types of resistors.

Instructional Materials; Assorted resistors. Draw symbols and sign of resistance.

5

CIRCUIT COMPONENTS

Resistance colour coding and rating. Calculation of resistance.

Teacher; explains resistors, colour coding and rating. Calculate resistance from resistor colour coding.

Students; calculate value of resistance from given resistor colour codes.

Teacher; explains capacitors and inductors. Students state the types of capacitors and inductors. Draw the symbols and signs of capacitors and inductors.

Instructional Materials; Assorted capacitors and inductors.

Teacher; explains capacitors colour coding and rating, inductor rating. Calculation of capacitors in series, parallel and series parallel. Calculation of inductors in series, parallel and series- parallel. Students assisted to calculate values for capacitance and inductance.

ELECTRIC CIRCUIT- BASIC COMPONENTS OF ELECTRIC CIRCUIT. (RESISTANCE, VOLTAGE AND CURRENT).

Teacher; explains electric circuit, different circuit boards, (e.g. veroboard, printed circuit board (PCB). Students; identify electric circuit, and different types of circuit board. Identify basic components of electric circuit.

Instructional Materials; Different circuit boards, circuit diagrams.

9

ELECTRIC CIRCUIT

CIRCUIT ARRANGEMENT

Series,

Parallel, and

Series- parallel.

Wiring of the different circuit arrangements.

Teacher; explains each circuit arrangement. Students; identify the three circuit arrangements. Carryout practical wiring of different circuit arrangement.

Teacher; performs simple calculations for different circuit arrangements. Students calculate resistance in series, parallel, and series-parallel arrangement.

Instructional Materials; Charts showing different circuit arrangements.