Essentials for Survival · SHS3 General Science

Lesson notes

Learning Objectives

Indicator: 3.2.1.LI.4 - Discuss the generation and transmission of nerve impulses.

By the end of the lesson, learners can:

Define a nerve impulse and describe the resting membrane potential as the baseline state of a neuron.
Describe the sequence of events in the generation of a nerve impulse, including depolarization, repolarization, and the action potential.
Explain how a nerve impulse is transmitted across a synapse using neurotransmitters.
Discuss the functions of at least three major neurotransmitters (acetylcholine, dopamine, serotonin) in the human body.
Draw and label a simple diagram showing the direction of impulse transmission between two neurons.

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Curriculum details

Strand: Processes for Living (Strand 2)
Sub-strand: Essentials for Survival (2.1)
Content standard: 3.2.1.CS.1 - Model and demonstrate understanding of the nervous system, its parts and uses. 3.2.1.LO.1 Model the structure of the nervous system and describe the functions of the parts of the nervous system.
Indicator: 3.2.1.LI.4 - Discuss the generation and transmission of nerve impulses.
Suggested placement: Semester 1, Week 11 (Week 11 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. 97

Exemplars (from the NaCCA curriculum)

Problem-Based Learning and Initiating Talk for Learning:
- Learners Think-pair and share in same-ability groups the pathways of communication within and between neurons using diagrams/video/pictures/simulation.
- In a whole class discussion led by the teacher, guide learners to brainstorm on three of the major neurotransmitters and describe their functions.
Teaching and Learning Resources:
- Models, Videos, books and Pictures of the central nervous system.
- Models, pictures, books, videos and the internet show the peripheral nervous system.
- Computer/internet, diagrams/video/pictures and drawing paper
Assessment (3.2.1.AS.4). The document marks no depth-of-knowledge level for this indicator.