This 50-minute KS4 Chemistry lesson introduces complete and incomplete combustion in a clear, structured, and SEN-friendly way. Created for students in an SEN Secondary School (Autism provision).

Students build understanding through explicit teaching, scaffolded questioning, retrieval practice, regular checking for understanding, and independent application tasks. Complex concepts are broken down using visual diagrams, real-life examples, and repeated retrieval opportunities.

Lesson Structure:

Starter – Odd One Out
Students identify the odd one out from a set of images and justify their reasoning, introducing the concept of combustion.

Task 1 – The Fire Triangle
Students learn the three requirements for combustion and complete a fire triangle retrieval activity.

Task 2 – Carbon Dioxide vs Carbon Monoxide
Students explore the difference between carbon dioxide and carbon monoxide and learn how oxygen availability affects the products formed.

Task 3 – Complete & Incomplete Combustion
Students learn:

Complete combustion word equation
Incomplete combustion word equation
Products formed
Energy released
Why oxygen is important

Students complete scaffolded equation activities throughout.

Task 4 – Applying Knowledge
Students decide whether a range of real-life situations show complete or incomplete combustion and justify their answers.

Task 5 – Dangers of Carbon Monoxide & Soot
Students compare the health risks of carbon monoxide and soot through a sorting activity and discussion.

Plenary – Retrieval
Students review key concepts including:

Includes:

• Worksheets - first three slides
• Multiple retrieval opportunities
• Scaffolded equation practice
• Real-world combustion examples
• Sorting and application activities
• Visual SEN-friendly explanations
• Everything unblurred when bought

Perfect for GCSE Chemistry, Combined Science, intervention groups, cover lessons, and SEN-friendly science teaching.