Circuits and Machines · SHS2 Engineering

Lesson notes

Learning Objectives

Indicator: 2.2.1.LI.2 - Apply knowledge of Electronic Components in designing Electronic Circuits

By the end of the lesson, learners can:

Draw a complete circuit diagram for a simple fire alarm circuit, correctly placing each electronic component based on its function.
Explain the role each component plays in a circuit design, justifying why each part was chosen for the intended task.
Design a rain alarm circuit using a buzzer, transistor, and moisture sensor, describing the function of each part in writing.
Work in a team to design and construct a working power supply, fire alarm, or rain alarm circuit on a breadboard, testing and troubleshooting the circuit to make it function correctly.
Present their completed circuit design to the class, explaining the design decisions they made and the function of each component.

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Curriculum details

Strand: Energy Systems (Strand 2)
Sub-strand: Circuits and Machines (2.1)
Content standard: 2.2.1.CS.1 - Develop an understanding of the design and construction processes for basic analogue electronic circuits. 2.2.1.LO.1 Explain the use of basic analogue electronic circuit components 2.2.1.LO.2 Apply the design process for simple electronic circuits.
Indicator: 2.2.1.LI.2 - Apply knowledge of Electronic Components in designing Electronic Circuits
Suggested placement: Semester 1, Week 19 (Week 19 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. 81

Exemplars (from the NaCCA curriculum)

Experiential Learning: Learners test various electronic components and share their observation with the whole class. The Facilitator guide learners to design fire alarm circuits, rain alarm circuits
Collaborative Learning: Put learners in groups to design power supply circuit, fire alarm circuit and rain alarm circuit

Assessment (2.2.1.AS.2). The document marks these depth-of-knowledge levels for this indicator: Level 2 Skills of conceptual understanding; Level 3 Strategic reasoning; Level 4 Extended critical thinking and reasoning.

Teaching and Learning Resources:
- Projector
- Laptop
- Assorted basic components of analogue electronic circuits and videos on the components of analogue electronic circuits