SHS3 Engineering · Semester 2 Week 6: Energy Efficiency and Conservation

Lesson notes

Learning Objectives

Indicator: 3.2.3.LI.1 - Describe devices used for energy conservation.

By the end of the lesson, learners can:

Define energy conservation and state at least three reasons why it is important for households, businesses and the nation.
Identify and name at least six common devices used for energy conservation from pictures, videos or physical samples.
Describe how each of these devices works to reduce energy consumption (photocells, timer switches, dimmers, occupancy sensors, motion sensors).
Match each energy conservation device to the situation or type of building where it is most appropriately used.
Explain the difference between devices that switch loads off automatically and devices that reduce the power drawn by a load.

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Curriculum details

Strand: Energy Systems (Strand 2)
Sub-strand: Energy Efficiency and Conservation (2.3)
Content standard: 3.2.3.CS.1 - Develop the skills to design and construct devices for Energy Conservation. 3.2.3.LO.1 Demonstrate understanding of devices for energy conservation. 3.2.3.LO.2 Design simple solutions for energy conservation in the use of lighting and consumer appliances.
Indicator: 3.2.3.LI.1 - Describe devices used for energy conservation.
Suggested placement: Semester 2, Week 6 (Week 26 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. 127

Exemplars (from the NaCCA curriculum)

Initiate Talk for Learning: In a question and answer session, learners brainstorm and share views on the importance of energy conservation and further share their experiences on energy conservation efforts.
Experiential Learning: Learners watch videos or pictures of devices used to aid energy conservation (e.g., photocells, timer switches, dimmers, occupancy sensors, motion sensors, etc.) Learners familiarise themselves with various energy conservation devices and share their observations.

Assessment (3.2.3.AS.1). The document marks these depth-of-knowledge levels for this indicator: Level 1 Recall; Level 2 Skills of conceptual understanding; Level 3 Strategic reasoning.

Teaching and Learning Resources:
- Projector
- Laptop
- variety of devices for energy conservation
- Videos on the application of various devices for energy conservation
- Assorted electrical and electronic components for devices for energy conservation