Neurons and Neurotransmitters

Overview

Duration: 60 minutes
Class Size: 13 students
Unit: Mind and Behaviour Exploration (Lesson 3 of 8)
Year Group: 10 (ages 14-15)
Subject Area: Other – Applied Psychology / Biology crossover
Curriculum Links:

UK Key Stage 4 National Curriculum for Science – Biology (especially nervous system content)
GCSE Psychology (AQA, Edexcel) content on neurons and neurotransmitters
PSHE (understanding mental health and behaviour)

Learning Objectives

By the end of the lesson, students will be able to:

Describe the structure and function of neurons.
Explain how electrical and chemical signals are used for brain communication.
Identify major neurotransmitters and their roles in influencing behaviour.
Model synaptic transmission through a kinaesthetic group activity.
Reflect on how imbalances in neurotransmitters can affect mood and behaviour.

Curriculum References

UK National Curriculum Science KS4: “The nervous system transmits signals…including neurons and synapses”
GCSE Psychology Specification (AQA / Edexcel): “Neurons and neurotransmitters; their role in behaviour”
PSHE: “Understand the biological basis of mental health and wellbeing”

Resources Required

Pre-prepared laminated neuron diagram cards (dendrite, soma, axon, synapse, neurotransmitters) – 1 set per group of 4
Soft balls or beanbags (to represent neurotransmitters)
Large whiteboard and markers
Individual student notebooks or worksheets
Short video clip (~3 mins) illustrating synaptic transmission (teacher-prepared or from approved sources)
Exit ticket slips

Lesson Structure

1. Starter Activity (10 minutes) – Quick Recall & Brainstorm

Activity: On the whiteboard write the question: "What do you know about how your brain sends messages?"
Ask students to shout out words or phrases (e.g. "neurons," "signals," "chemicals," "brain cells") – teacher lists these visibly.
Brief share: Teacher clarifies key terms and relates to previous lessons in the unit (particularly how behaviour links to brain activity).
Use this as formative assessment to gauge prior knowledge.

2. Introduction to Neurons (10 minutes) – Direct Teaching with Visuals

Present the structure of a neuron using a large diagram.
Key terminology: dendrites, cell body (soma), axon, myelin sheath, synapse.
Explain function of each part in simple terms linking to signal transmission (electrical impulse from dendrites → axon → synapse).
Ask targeted questions to ensure understanding (e.g. "What does the axon do? Why are dendrites important?").
Link to National Curriculum biology: “The nervous system transmits messages as electrical impulses along nerves.”

3. Kinaesthetic Activity (20 minutes) – Synapse Simulation

Divide class into 3 groups (4-5 students per group). Each group gets a set of laminated neuron cards arranged on desk/table.
Assign roles: some students represent “pre-synaptic” neurons, others “post-synaptic” neurons, and some will be “neurotransmitters” (holding beanbags).
Task: simulate signal transmission from one neuron to another:
- Pre-synaptic neuron ‘fires’ by throwing neurotransmitter beanbags across to post-synaptic neuron.
- Students at post-synaptic neuron receive beanbags (neurotransmitters) and pass on the signal by shouting a behaviour-related word (e.g. ‘happy’, ‘fear’, ‘muscle move’).
Rotate roles so each student experiences different neuron parts.
Debrief: Discuss how neurotransmitter quantity and type can speed up or slow down behaviours or change mood.

4. Linking Neurotransmitters to Behaviour (10 minutes) – Interactive Mini-Lecture & Discussion

Teacher introduces key neurotransmitters: dopamine, serotonin, adrenaline, GABA, and their influence on behaviour and emotion.
Use relatable examples: dopamine linked with pleasure and reward; serotonin with mood regulation; adrenaline with fight or flight response.
Discuss how imbalance affects conditions like depression or anxiety, reinforcing relevance to PSHE.
Use student discussion prompts to connect theory to personal or observed behaviour (optional reflection writing).

5. Plenary (7 minutes) – Exit Ticket and Q&A

Distribute small slips where students write:
- One fact they learned about neurons or neurotransmitters.
- One question they still have about how neurochemicals affect behaviour.
Collect exit tickets and briefly address common questions or talk through misconceptions.
Reinforce lesson objectives and provide a teaser for next lesson (how brain processes behaviour at a complex level).

Differentiation

For SEN students: Provide neuron diagram handouts with labelled parts. Use simple language and encourage peer support during activities.
For more able learners: Challenge them to explain the significance of synaptic plasticity or consider what might happen if neurotransmitter function is disrupted.
Allow extension tasks on individual’s interest (e.g., research a mental health condition linked to neurotransmitters for homework).

Assessment Opportunities

Observation during kinaesthetic activity for understanding signal transmission.
Responses during questioning and discussion for conceptual grasp.
Exit ticket to assess knowledge retention and identify knowledge gaps.

Reflection for Teachers

Did students actively participate and grasp neuron roles?
Which neurotransmitter examples sparked the most discussion or curiosity?
Could the kinaesthetic activity be enhanced with technology (e.g., tablet animations or VR synapse simulations) in future lessons?
Were all students challenged and supported appropriately?

Extra Ideas to ‘Wow’:

Use glow-in-the-dark markers on neuron diagrams and turn off lights to simulate electrical impulses glowing along the axon.
Create a class “neuron network” by having students link arms and pass a ‘signal’ (beanbag or small ball) along the chain in real time.
Incorporate a sound effect app that plays synaptic ‘zap’ sounds as neurotransmitters are passed.

This plan combines core biological science with interactive psychology concepts to deepen students’ understanding of brain-behaviour links, aligned closely with UK education standards and suitable for Year 10 learners.

Teaching Instructions