SHS2 Design And Communication Technology · Semester 2 Week 10: Building Drawing

Lesson notes

Learning Objectives

Indicator: 2.3.1.LI.2 - Use electronic and electrical symbols to draw simple electronic and electrical circuit diagrams.

By the end of the lesson, learners can:

Identify at least five standard electrical and electronic symbols (switch, fuse, circuit breaker, cell, lamp, diode) from charts and models.
Explain the function of each symbol in a circuit diagram in their own words.
Design a simple electrical circuit using a switch, fuse, and circuit breaker, and draw it neatly as a circuit diagram using drawing instruments.
Design a simple electronic circuit using a cell, lamp, and diode, and draw it neatly as a circuit diagram using drawing instruments.
Interpret a given schematic diagram by tracing the flow of current and explaining the role of each component.

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Curriculum details

Strand: Extended Drawing (Strand 3)
Sub-strand: Building Drawing (3.1)
Content standard: 2.3.1.CS.2 - 2.3.1.CS.2 Understand the principles of Electrical drawings (Understand the application of the principles of Electrical drawings). 2.3.1.LO.1 Employ the understanding of floor plans with the use of building codes, standards and symbols, make the sketches of elevations of buildings and use the drawing instrument to draw some of them. 2.3.1.LO.2 Use your understanding on the principles of electrical circuit and circuit diagrams to explain electrical circuit and circuit diagrams.
Indicator: 2.3.1.LI.2 - Use electronic and electrical symbols to draw simple electronic and electrical circuit diagrams.
Suggested placement: Semester 2, Week 10 (Week 30 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: NaCCA curriculum document, p. 71

Exemplars (from the NaCCA curriculum)

Activity based learning, Experiential learning: Guide learners to use a switch, fuse and circuit breakers to design a simple electrical circuit. Again assist the learners to use a cell, a lamp and a diode to design an electronic circuit

Activity based learning: With the use of drawing instrument, learners make neat circuit diagrams from the electrical and electronic circuits designed

Collaborative learning/ Group work, Project-based learning
1. Through brainstorming, charts, pictures and in mixed gender grouping, assist learners to design an electrical or electronic circuit using five different components and use a drawing instrument to develop it into a circuit diagram.
2. Use the circuit diagram to explain schematic diagram"

Assessment (2.3.1.AS.2). The document marks these depth-of-knowledge levels for this indicator: Level 4 Extended critical thinking and reasoning.

Teaching and Learning Materials:
- Models
- Charts
- Reference books
- Drawing studio
- Drawing instruments
- Access to internet
- LCD Projector