Electronic Components… · SHS3 Applied Technology

Lesson notes

Learning Objectives

Indicator: 3.5.2.LI.7 - Describe the truth table for the various logic gates and determine the output function of the various gates.

By the end of the lesson, learners can:

Construct truth tables for the AND, OR, NOT, NAND, NOR, XOR and XNOR logic gates showing all possible input combinations and their corresponding outputs.
Derive the output function (Boolean expression) from a given truth table for a logic circuit.
Determine the output of a multi-gate logic circuit by working through its Boolean expression step by step.
Evaluate a Boolean expression for given input values (0 or 1) and verify the result against a constructed truth table.
Present and explain truth table findings clearly to peers during group discussions and whole-class presentations.

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Curriculum details

Strand: Electrical and Electronic Technology (Strand 5)
Sub-strand: Electronic Components and Circuits (5.2)
Content standard: 3.5.2.CS.1 - 3.5.2.CS.1 Demonstrate knowledge and understanding of electronic components and use them to design and construct electronic circuits. 3.5.2.LO.1 Demonstrate knowledge and understanding of electronic components and use them to design and construct electronic circuits.
Indicator: 3.5.2.LI.7 - Describe the truth table for the various logic gates and determine the output function of the various gates.
Suggested placement: Semester 2, Week 17 (Week 37 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.
Source document note: The official curriculum document has a fault in this entry, so the curriculum text above is transcribed exactly as printed:

content standard text - p.193: prints the content-standard code as "2.5.2.CS.1"; filed under the section's own 3.5.2.CS.1
content standard text - p.193: prints the learning-outcome code as "2.4.2.LO.1"; filed under the section's own 3.5.2.LO.1
content standard text - p.193: the front page prints "Strand 4." for Electrical and Electronic Technology inside the YEAR THREE section, where Year 3's strand 4 is Wood Technology (printed pp.164 and 170); the Contents page (printed p.6) prints "STRAND 5. ELECTRICAL AND ELECTRONIC TECHNOLOGY" for Year 3 and Year 2 numbers the same strand 5, so the row is filed under strand 5
indicator text - p.193: prints the learning-indicator code as "2.5.2.LI.7"; filed under the section's own 3.5.2.LI.7
exemplars - p.193: prints the assessment code as "2.5.2.AS.7"; filed under the section's own 3.5.2.AS.7
Curriculum reference: NaCCA curriculum document, p. 193

Exemplars (from the NaCCA curriculum)

Focal Are a:
1. Truth Tables of logic gates
2. Boolean Expression. Pedagogy
Experiential Learning: Engage learners to work in mixed gender groups to:
- Construct the truth table for the various logic gates and determine the output functions of the various gates from the Boolean expressions given.
- Task learners to present their findings from the group work
Experiential Learning/collaborative learning/ project-based learning: Group learners in mixed-ability and guide them to perform experiments on logic gates functions E.g. F = (A. B) + A) .B) NB. Ensure all learners participate in all varieties of practical activities and project work given mixed gender groupings as well and also ensure mixed gender grouping when practical work such as constructing amplifier circuits is being carried out.

Assessment (3.5.2.AS.7). The document marks these depth-of-knowledge levels for this indicator: Level 2 Skills of conceptual understanding; Level 3 Strategic reasoning.

Teaching and Learning Materials:
- Computers installed with multism software
- Electronic Components
- multimeters
- the use of the internet