Homeschool Guide: These lesson plans are a guide for parents. Content may contain errors — always cross-reference with official exam board specifications.

B27: The Endocrine System

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4 detailed 50-minute lessons with teaching scripts, worked examples, parent guides, and assessment criteria.

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Lesson Overview

Total Lessons: 4
Tier: Foundation and Higher
Duration: 50 minutes per lesson (200 minutes total)
Exam Boards: AQA, Edexcel, OCR, CCEA

Learning Objectives

Prerequisites

Materials & Equipment

Lesson 1: Introduction: The Endocrine System

Duration: 50 minutes

Starter Activity (5 minutes)

Quick Recall

3 quick questions to activate prior knowledge about the endocrine system. Use mini-whiteboard or paper.

Main Content (35 minutes)

Parent/Teacher Guide:
Before lesson: Read script below. Prepare materials. Pre-teach key vocab: The Endocrine System.
If stuck: See Troubleshooting below. Break into smaller steps.
Extension: See Stretch & Challenge section.
Teaching Script (35 mins):
Mins 0-5 - Hook: "Today: The Endocrine System. Goal: by the end you can a person is in a dangerous situation. Name the hormone that is released and describe its effects on the body, using the method shown step by step. Connects to the previous lesson in this unit because you'll reuse its method throughout today's work."
Mins 5-15 - Direct Instruction: 1) Define: "The Endocrine System is..." 2) Key principle: "Most important:..." 3) Draw diagram, label live. 4) Real example: "Like A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body. - a real example worked through in full..."
Mins 15-25 - Guided Practice: Ex1: Teacher models. Ex2: Student tries with guidance. Ex3: Student independent.
Mins 25-35 - Independent Practice: 3-5 questions. Immediate feedback.
Worked Example 1: Basic

Q: A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.

  1. What is asked? A
  2. Recall knowledge:
  3. Apply: Adrenaline is released by the adrenal glands. Its effects include: increased heart rate, increased breathing rate, increased blood flow to muscles, dilation of pupils, and increased conversion of glycogen to glucose in the liver. All of these prepare the body for "fight or flight".
  4. Check: Check the units named in the question and sense-check the size of your answer.
  5. Answer: State the complete final answer.

Tip: "Show working - method marks > answer marks."

Worked Example 2: Multi-step

Q: A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.

  1. Break down: Separate parts?
  2. Solve each: Adrenaline is released by the adrenal glands. Its effects include: increased heart rate, increased breathing rate, increased blood flow to muscles, dilation of pupils, and increased conversion of glycogen to glucose in the liver. All of these prepare the body for "fight or flight".
  3. Combine: The parts chain: each answer feeds the next step of the question.
  4. Final answer: Evidence cited from the lesson content.
Worked Example 3: Data/Application

Q: A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.

  1. Read data: Axes, units, scale
  2. Patterns: Trends, anomalies
  3. Explain: Why? Using the endocrine system
  4. Conclude: Evidence-based

Common Questions & Troubleshooting

Q: "Why does The Endocrine System work this way?"
A: Analogy: "A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.". Try re-draw or re-write the worked example from memory, then check it against the model answer.
Q: "Wrong answers on calculations."
A: Checklist: units? formula? calculator mode? sig figs?
Q: "Can't remember key terms."
A: Flashcards (term front, def+diagram back). Spaced repetition: day 1, 3, 7.
Q: "Exam wording confuses me."
A: Commands: Describe=what you see; Explain=reasons; Evaluate=pros/cons+judgement; Calculate=working+units.
Q: "Running out of time."
A: 1 mark/min. Skip hard, return. Attempt all - partial marks count.

Assessment & Model Answers

Mastery Checklist:
  • [ ] Define The Endocrine System in own words
  • [ ] Identify features in diagram
  • [ ] Explain process step-by-step
  • [ ] Apply to unfamiliar context
  • [ ] Score 80%+ on past paper question

Model Answer: Past Paper Question

Q: A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.

  • 1 mark: [Key terminology]
  • 1 mark: [Mechanism/process]
  • 1 mark: [Application/example]
  • 1 mark: [Evaluation - Higher]

Model response: "[Complete answer with expected detail/terminology]"

Why full marks: [What makes this strong]

Stretch & Challenge (Grade 8-9):
  • Synoptic links: Connect to B26-the-eye / B28-control-of-blood-glucose
  • Real-world: Research use in industry, medicine or research
  • Advanced calc: Try a more challenging variant
  • Critical: "Evaluate limitations of today's model"
  • Research: Recent discovery on the endocrine system, summarise 100 words

Plenary (5 mins)

Label the Diagram

Unlabelled diagram - write all parts in 1 min

Assessment Criteria

Lesson 2: Core Concepts: The Endocrine System

Duration: 50 minutes

Starter Activity (5 minutes)

Review Previous Lesson

Quick recap: write 3 key points from last lesson on the endocrine system. Use mini-whiteboard or paper.

Main Content (35 minutes)

Parent/Teacher Guide:
Before lesson: Read script below. Prepare materials. Pre-teach key vocab: The Endocrine System.
If stuck: See Troubleshooting below. Break into smaller steps.
Extension: See Stretch & Challenge section.
Teaching Script (35 mins):
Mins 0-5 - Hook: "Today: The Endocrine System. Goal: by the end you can a person is in a dangerous situation. Name the hormone that is released and describe its effects on the body, using the method shown step by step. Connects to the previous lesson in this unit because you'll reuse its method throughout today's work."
Mins 5-15 - Direct Instruction: 1) Define: "The Endocrine System is..." 2) Key principle: "Most important:..." 3) Draw diagram, label live. 4) Real example: "Like A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body. - a real example worked through in full..."
Mins 15-25 - Guided Practice: Ex1: Teacher models. Ex2: Student tries with guidance. Ex3: Student independent.
Mins 25-35 - Independent Practice: 3-5 questions. Immediate feedback.
Worked Example 1: Basic

Q: A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.

  1. What is asked? A
  2. Recall knowledge:
  3. Apply: Adrenaline is released by the adrenal glands. Its effects include: increased heart rate, increased breathing rate, increased blood flow to muscles, dilation of pupils, and increased conversion of glycogen to glucose in the liver. All of these prepare the body for "fight or flight".
  4. Check: Check the units named in the question and sense-check the size of your answer.
  5. Answer: State the complete final answer.

Tip: "Show working - method marks > answer marks."

Worked Example 2: Multi-step

Q: A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.

  1. Break down: Separate parts?
  2. Solve each: Adrenaline is released by the adrenal glands. Its effects include: increased heart rate, increased breathing rate, increased blood flow to muscles, dilation of pupils, and increased conversion of glycogen to glucose in the liver. All of these prepare the body for "fight or flight".
  3. Combine: The parts chain: each answer feeds the next step of the question.
  4. Final answer: Evidence cited from the lesson content.
Worked Example 3: Data/Application

Q: A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.

  1. Read data: Axes, units, scale
  2. Patterns: Trends, anomalies
  3. Explain: Why? Using the endocrine system
  4. Conclude: Evidence-based

Common Questions & Troubleshooting

Q: "Why does The Endocrine System work this way?"
A: Analogy: "A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.". Try re-draw or re-write the worked example from memory, then check it against the model answer.
Q: "Wrong answers on calculations."
A: Checklist: units? formula? calculator mode? sig figs?
Q: "Can't remember key terms."
A: Flashcards (term front, def+diagram back). Spaced repetition: day 1, 3, 7.
Q: "Exam wording confuses me."
A: Commands: Describe=what you see; Explain=reasons; Evaluate=pros/cons+judgement; Calculate=working+units.
Q: "Running out of time."
A: 1 mark/min. Skip hard, return. Attempt all - partial marks count.

Assessment & Model Answers

Mastery Checklist:
  • [ ] Define The Endocrine System in own words
  • [ ] Identify features in diagram
  • [ ] Explain process step-by-step
  • [ ] Apply to unfamiliar context
  • [ ] Score 80%+ on past paper question

Model Answer: Past Paper Question

Q: A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.

  • 1 mark: [Key terminology]
  • 1 mark: [Mechanism/process]
  • 1 mark: [Application/example]
  • 1 mark: [Evaluation - Higher]

Model response: "[Complete answer with expected detail/terminology]"

Why full marks: [What makes this strong]

Stretch & Challenge (Grade 8-9):
  • Synoptic links: Connect to B26-the-eye / B28-control-of-blood-glucose
  • Real-world: Research use in industry, medicine or research
  • Advanced calc: Try a more challenging variant
  • Critical: "Evaluate limitations of today's model"
  • Research: Recent discovery on the endocrine system, summarise 100 words

Plenary (5 mins)

Label the Diagram

Unlabelled diagram - write all parts in 1 min

Assessment Criteria

Lesson 3: Application: The Endocrine System

Duration: 50 minutes

Starter Activity (5 minutes)

Review Previous Lesson

Quick recap: write 3 key points from last lesson on the endocrine system. Use mini-whiteboard or paper.

Main Content (35 minutes)

Parent/Teacher Guide:
Before lesson: Read script below. Prepare materials. Pre-teach key vocab: The Endocrine System.
If stuck: See Troubleshooting below. Break into smaller steps.
Extension: See Stretch & Challenge section.
Teaching Script (35 mins):
Mins 0-5 - Hook: "Today: The Endocrine System. Goal: by the end you can a person is in a dangerous situation. Name the hormone that is released and describe its effects on the body, using the method shown step by step. Connects to the previous lesson in this unit because you'll reuse its method throughout today's work."
Mins 5-15 - Direct Instruction: 1) Define: "The Endocrine System is..." 2) Key principle: "Most important:..." 3) Draw diagram, label live. 4) Real example: "Like A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body. - a real example worked through in full..."
Mins 15-25 - Guided Practice: Ex1: Teacher models. Ex2: Student tries with guidance. Ex3: Student independent.
Mins 25-35 - Independent Practice: 3-5 questions. Immediate feedback.
Worked Example 1: Basic

Q: A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.

  1. What is asked? A
  2. Recall knowledge:
  3. Apply: Adrenaline is released by the adrenal glands. Its effects include: increased heart rate, increased breathing rate, increased blood flow to muscles, dilation of pupils, and increased conversion of glycogen to glucose in the liver. All of these prepare the body for "fight or flight".
  4. Check: Check the units named in the question and sense-check the size of your answer.
  5. Answer: State the complete final answer.

Tip: "Show working - method marks > answer marks."

Worked Example 2: Multi-step

Q: A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.

  1. Break down: Separate parts?
  2. Solve each: Adrenaline is released by the adrenal glands. Its effects include: increased heart rate, increased breathing rate, increased blood flow to muscles, dilation of pupils, and increased conversion of glycogen to glucose in the liver. All of these prepare the body for "fight or flight".
  3. Combine: The parts chain: each answer feeds the next step of the question.
  4. Final answer: Evidence cited from the lesson content.
Worked Example 3: Data/Application

Q: A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.

  1. Read data: Axes, units, scale
  2. Patterns: Trends, anomalies
  3. Explain: Why? Using the endocrine system
  4. Conclude: Evidence-based

Common Questions & Troubleshooting

Q: "Why does The Endocrine System work this way?"
A: Analogy: "A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.". Try re-draw or re-write the worked example from memory, then check it against the model answer.
Q: "Wrong answers on calculations."
A: Checklist: units? formula? calculator mode? sig figs?
Q: "Can't remember key terms."
A: Flashcards (term front, def+diagram back). Spaced repetition: day 1, 3, 7.
Q: "Exam wording confuses me."
A: Commands: Describe=what you see; Explain=reasons; Evaluate=pros/cons+judgement; Calculate=working+units.
Q: "Running out of time."
A: 1 mark/min. Skip hard, return. Attempt all - partial marks count.

Assessment & Model Answers

Mastery Checklist:
  • [ ] Define The Endocrine System in own words
  • [ ] Identify features in diagram
  • [ ] Explain process step-by-step
  • [ ] Apply to unfamiliar context
  • [ ] Score 80%+ on past paper question

Model Answer: Past Paper Question

Q: A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.

  • 1 mark: [Key terminology]
  • 1 mark: [Mechanism/process]
  • 1 mark: [Application/example]
  • 1 mark: [Evaluation - Higher]

Model response: "[Complete answer with expected detail/terminology]"

Why full marks: [What makes this strong]

Stretch & Challenge (Grade 8-9):
  • Synoptic links: Connect to B26-the-eye / B28-control-of-blood-glucose
  • Real-world: Research use in industry, medicine or research
  • Advanced calc: Try a more challenging variant
  • Critical: "Evaluate limitations of today's model"
  • Research: Recent discovery on the endocrine system, summarise 100 words

Plenary (5 mins)

Exam Question Speed Round

5 quick questions, 1 min each. Mark together.

Assessment Criteria

Lesson 4: Exam Practice: The Endocrine System

Duration: 50 minutes

Starter Activity (5 minutes)

Review Previous Lesson

Quick recap: write 3 key points from last lesson on the endocrine system. Use mini-whiteboard or paper.

Main Content (35 minutes)

Parent/Teacher Guide:
Before lesson: Read script below. Prepare materials. Pre-teach key vocab: The Endocrine System.
If stuck: See Troubleshooting below. Break into smaller steps.
Extension: See Stretch & Challenge section.
Teaching Script (35 mins):
Mins 0-5 - Hook: "Today: The Endocrine System. Goal: by the end you can a person is in a dangerous situation. Name the hormone that is released and describe its effects on the body, using the method shown step by step. Connects to the previous lesson in this unit because you'll reuse its method throughout today's work."
Mins 5-15 - Direct Instruction: 1) Define: "The Endocrine System is..." 2) Key principle: "Most important:..." 3) Draw diagram, label live. 4) Real example: "Like A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body. - a real example worked through in full..."
Mins 15-25 - Guided Practice: Ex1: Teacher models. Ex2: Student tries with guidance. Ex3: Student independent.
Mins 25-35 - Independent Practice: 3-5 questions. Immediate feedback.
Worked Example 1: Basic

Q: A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.

  1. What is asked? A
  2. Recall knowledge:
  3. Apply: Adrenaline is released by the adrenal glands. Its effects include: increased heart rate, increased breathing rate, increased blood flow to muscles, dilation of pupils, and increased conversion of glycogen to glucose in the liver. All of these prepare the body for "fight or flight".
  4. Check: Check the units named in the question and sense-check the size of your answer.
  5. Answer: State the complete final answer.

Tip: "Show working - method marks > answer marks."

Worked Example 2: Multi-step

Q: A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.

  1. Break down: Separate parts?
  2. Solve each: Adrenaline is released by the adrenal glands. Its effects include: increased heart rate, increased breathing rate, increased blood flow to muscles, dilation of pupils, and increased conversion of glycogen to glucose in the liver. All of these prepare the body for "fight or flight".
  3. Combine: The parts chain: each answer feeds the next step of the question.
  4. Final answer: Evidence cited from the lesson content.
Worked Example 3: Data/Application

Q: A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.

  1. Read data: Axes, units, scale
  2. Patterns: Trends, anomalies
  3. Explain: Why? Using the endocrine system
  4. Conclude: Evidence-based

Common Questions & Troubleshooting

Q: "Why does The Endocrine System work this way?"
A: Analogy: "A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.". Try re-draw or re-write the worked example from memory, then check it against the model answer.
Q: "Wrong answers on calculations."
A: Checklist: units? formula? calculator mode? sig figs?
Q: "Can't remember key terms."
A: Flashcards (term front, def+diagram back). Spaced repetition: day 1, 3, 7.
Q: "Exam wording confuses me."
A: Commands: Describe=what you see; Explain=reasons; Evaluate=pros/cons+judgement; Calculate=working+units.
Q: "Running out of time."
A: 1 mark/min. Skip hard, return. Attempt all - partial marks count.

Assessment & Model Answers

Mastery Checklist:
  • [ ] Define The Endocrine System in own words
  • [ ] Identify features in diagram
  • [ ] Explain process step-by-step
  • [ ] Apply to unfamiliar context
  • [ ] Score 80%+ on past paper question

Model Answer: Past Paper Question

Q: A person is in a dangerous situation. Name the hormone that is released and describe its effects on the body.

  • 1 mark: [Key terminology]
  • 1 mark: [Mechanism/process]
  • 1 mark: [Application/example]
  • 1 mark: [Evaluation - Higher]

Model response: "[Complete answer with expected detail/terminology]"

Why full marks: [What makes this strong]

Stretch & Challenge (Grade 8-9):
  • Synoptic links: Connect to B26-the-eye / B28-control-of-blood-glucose
  • Real-world: Research use in industry, medicine or research
  • Advanced calc: Try a more challenging variant
  • Critical: "Evaluate limitations of today's model"
  • Research: Recent discovery on the endocrine system, summarise 100 words

Plenary (5 mins)

Exam Question Speed Round

5 quick questions, 1 min each. Mark together.

Assessment Criteria

📝 Mark Scheme Guidance

How examiners mark B27: Read the command word carefully — State = one word/phrase (1 mark), Describe = pattern or detail (2 marks), Explain = reason with "because" (2–3 marks), Compare = similarities AND differences, Evaluate = both sides + conclusion. Method marks are awarded for correct working even if the final answer is wrong. Always show your working — unexplained answers score zero for AO2.

Success on B27 questions: Underline the command word, count the marks (one mark per point expected), and answer in the format the command word demands.

Board Notes & Revision Links

This lesson is examined by: AQA 8461 | Edexcel 1BI0 | OCR J247 | CCEA units. Tier and paper details vary - always check your board's current specification.

Follow-up revision: B15-the-endocrine-system on GCSE Revise (notes, flashcards and auto-graded target tests for this exact topic).

📐 Reference Diagram

START Condition true? Yes No Do A Do B

✏️ Draw-Along Instructions

Parent/teacher: Draw the key diagram for homeostasis: start with the main structure, add labels with arrows, then annotate with the key facts from the lesson. Use a ruler for straight lines.

Display the reference diagram (or draw it live) while pupils copy. Check each label as it is added.

Homework & Consolidation

Recommended Resources

🎓 Smart Lesson (Guided)