electronic systems
4 detailed 50-minute lessons with teaching scripts, worked examples, parent guides, and assessment criteria.
Lesson Overview
Total Lessons: 4
Tier: Foundation and Higher
Duration: 50 minutes per lesson (200 minutes total)
Exam Boards: AQA, Edexcel, OCR, Eduqas, CCEA
Tier: Foundation and Higher
Duration: 50 minutes per lesson (200 minutes total)
Exam Boards: AQA, Edexcel, OCR, Eduqas, CCEA
Learning Objectives
- Explain the key ideas of electronic systems
- Apply electronic systems to exam-style questions
- Develop independent study skills
- Build cross-topic connections
Prerequisites
- Read the revision notes for electronic systems first (GCSE Revise summary)
- Key vocab to pre-teach: key terms from electronic systems
- Basic skills: reading the summary notes and answering the practice questions there
Materials & Equipment
- Exercise book, coloured pens
- Ruler
- Printed revision notes (link below)
- Internet for videos (see Resources)
Lesson 1: Introduction: electronic systems
Duration: 50 minutes
Starter Activity (5 minutes)
Quick Recall
Write down everything you already know about electronic systems. Then check against the key terms: key terms from electronic systems. Use a mini-whiteboard or paper.
Main Content (35 minutes)
Parent/Teacher Guide:
Before lesson: Read the script below. Pre-teach key vocab: key terms from electronic systems.
If stuck: Re-read the revision notes (link above), then break the content into smaller steps.
Extension: See the Stretch & Challenge ideas in Lesson 4.
Before lesson: Read the script below. Pre-teach key vocab: key terms from electronic systems.
If stuck: Re-read the revision notes (link above), then break the content into smaller steps.
Extension: See the Stretch & Challenge ideas in Lesson 4.
Teaching Script (35 mins):
Mins 0-5 - Hook: "Today: electronic systems. By the end you will be able to answer exam questions on it unaided. It connects to the rest of Engineering because the ideas here recur across the spec."
Mins 5-20 - Direct Instruction: Work through the core ideas below one at a time; after each, ask your student to explain it back in their own words.
Mins 20-30 - Guided Practice: Model the worked example together, then let your student attempt the first practice question with guidance.
Mins 30-35 - Independent Practice: 2-3 practice questions from Lesson 3 below, with immediate feedback.
Mins 0-5 - Hook: "Today: electronic systems. By the end you will be able to answer exam questions on it unaided. It connects to the rest of Engineering because the ideas here recur across the spec."
Mins 5-20 - Direct Instruction: Work through the core ideas below one at a time; after each, ask your student to explain it back in their own words.
Mins 20-30 - Guided Practice: Model the worked example together, then let your student attempt the first practice question with guidance.
Mins 30-35 - Independent Practice: 2-3 practice questions from Lesson 3 below, with immediate feedback.
First Look
Start with the revision notes summary, then attempt: explain the key ideas of electronic systems
Plenary (5 minutes)
Check Out
Your student states one thing they learned and one question they still have about electronic systems.
Lesson 2: Core Concepts: electronic systems
Duration: 50 minutes
Starter Activity (5 minutes)
Review Previous Lesson
Quick recap: write 3 key points from Lesson 1 on electronic systems. Check them against the notes below.
Main Content (35 minutes)
Key Fact: Electronic systems process information using electronic components: input (sensors), process (logic/programming), output (actuators).
Key Fact: Input sensors convert physical quantities to electrical signals: LDRs (light), thermistors (temperature), potentiometers (position).
Key Fact: Analogue signals vary continuously; digital signals have only two states (high/low, 1/0); ADCs convert analogue to digital.
Key Fact: Logic gates process digital signals: AND (output high only if all inputs high), OR (output high if any input high), NOT (inverts).
Key Fact: Combining logic gates creates combinational logic circuits for specific decision-making functions.
Key Fact: Programmable devices (microcontrollers, PICs) can be programmed to perform complex control tasks using software.
Practice (10 minutes)
Q: explain the key ideas of electronic systems
Answer:
Plenary (5 minutes)
Explain Back
Your student teaches the key points back to you without looking. Fill any gaps immediately.
Lesson 3: Application: electronic systems
Duration: 50 minutes
Starter Activity (5 minutes)
Quick Recall
Recall the key terms: key terms from electronic systems. Define each in one sentence.
Main Content (35 minutes)
Parent/Teacher Guide: Let your student attempt each question alone first, then compare with the model answer. Award method marks for correct working even if the final answer is wrong.
Work through the practice questions on the revision notes page for this topic.
Plenary (5 minutes)
Error Review
Review any questions answered incorrectly. Identify whether the error was knowledge, method, or reading the question.
Lesson 4: Exam Practice: electronic systems
Duration: 50 minutes
Starter Activity (5 minutes)
Command Words
Review what these command words require: state (one point), describe (say what happens), explain (say why), compare (both sides), evaluate (judgement).
Main Content (35 minutes)
Exam-Style Question
Attempt a past-paper style question on electronic systems from the exam board past paper finder (see Resources), then mark it against the scheme.
Exam Tips: When designing electronic systems, always identify the input, process and output blocks separately. | Logic gate truth tables must be complete for all input combinations — use systematic ordering (00, 01, 10, 11). | In microcontroller questions, describe the program using flowchart symbols or pseudocode. | Transistor interfacing questions are common: explain base, collector and emitter currents clearly. | Remember that sensors produce analogue signals that need ADC conversion before digital processing.
Common Errors: ✗ Logic gates can directly drive motors and other high-current loads. ✓ Logic gate outputs are low current (a few mA); a transistor or relay interface is needed to switch the higher current required by motors and other loads. ✗ Microcontrollers do not need programming to work. ✓ Microcontrollers must be programmed with specific instructions; without a program, they do nothing. ✗ An LDR's resistance increases when light intensity increases. ✓ An LDR (light dependent resistor) has resistance that DECREASES as light intensity increases. ✗ Analogue and digital signals are interchangeable without any conversion. ✓ Analogue signals must be converted to digital using an ADC before a microcontroller
Stretch & Challenge (Grade 8-9):
- Synoptic links: explain how electronic systems connects to another Engineering topic you have studied
- Real-world: research one real-world use or example of electronic systems
- Critical: "What are the limitations of the models used in electronic systems?"
Plenary (5 minutes)
Assessment Criteria
- Got it: Confident explanation + correct worked examples
- Getting there: Main points OK, needs support with detail
- Not yet: Confused on key concepts - re-run Lesson 2
Homework & Consolidation
- Consolidation: Re-answer any Lesson 3 practice questions answered incorrectly (20 mins)
- Retrieval: Write flashcards for the key terms: key terms from electronic systems (10 mins)
- Exam practice: One past-paper question on electronic systems from the board websites (15 mins)
- Extension: Explain electronic systems to someone else in your own words (10 mins)