Complete No-Prep lesson with exam questions, tasks and answers on Vector Diagrams and Resolving Forces for AQA GCSE (9-1) Science / Physics. This lesson covers the second part of AQA GCSE Physics 4.5.1.4 / Combined Science 6.5.1.4 and is for higher tier students only. As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Teaching notes • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Worked examples of calculations / questions. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The lesson was written for AQA GCSE Science / Physics but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam questions, tasks and answers on Nuclear Fission for AQA GCSE (9-1) Science / Physics. This lessons covers all of AQA GCSE Physics 4.4.4.1. As a Secondary Science teacher and Deputy Headteacher for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Worked examples of calculations / questions. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. Learning objectives: Describe the process of nuclear fission. Describe the difference between spontaneous fission and induced fission. Describe how fission produces two daughter nuclei, two or three more neutrons and gamma rays and is accompanied by a release of energy. Describe the energy store that the products of nuclear fission have. Explain why nuclear fission can cause a chain reaction and how the chain reaction can be controlled, including in a reactor core. Explain how an uncontrolled chain reaction can cause an explosion such as in an atomic bomb. Describe how a controlled chain reaction can be used to generate electricity. The lesson was written for AQA GCSE Science / Physics but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam questions, tasks and answers on Braking Distance for AQA GCSE (9-1) Science / Physics. This lesson covers all of AQA GCSE Physics 4.5.6.3.3 and 4.5.6.3.4 / Combined Science 6.5.4.3.3 and 6.5.4.3.4 except for “estimate how the distance required for road vehicles to stop in an emergency varies over a range of typical speeds.” which is covered in my previous lesson (https://www.tes.com/teaching-resource/resource-12607303) As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Teaching notes • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Worked examples of calculations / questions. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The lesson was written for AQA GCSE Science / Physics but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete no-prep lesson with 50+ slides tasks, answers and unique exam questions, on Transformers and the National Grid for the Electromagnetism Topic of GCSE (9-1) Science / Physics. Please note, if you are looking for the National Grid lesson for the Electricity Topic it is here: https://www.tes.com/teaching-resource/resource-12668952 As a Secondary Science teacher and Deputy Headteacher for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists because I myself retrained as a Physics teacher despite having a background in Biology. Having to learn the subject myself means I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: Two starters so you can extend this over two lessons if needs be. Explanation slides in “chunked” sections with animated diagrams. Worked examples of calculations. Editable diagrams and animations which help aid understanding. Multiple questions in different question styles and difficulties - no need for worksheets. Most “chunked” explanation sections include a set of “learning check quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. Exam-style questions on the whole lesson at the end of the lesson- these are uniquebased on real exam questions but not just copied from exam boards. Answers for all questions All easily editable to adapt to your teaching or to use in existing lessons. Slightly humourous, at points, if you like that sort of thing. Learning objectives: Describe what a transformer does, and its structure. Explain how transformers work, including how the ratio of potential differences relates to the ratio of turns on each coil. Explain how an alternating current in the primary coil induces an alternating potential difference in the secondary coil. Apply the following equations: Vp / Vs = Np / Ns and V s × Is = V p × I p Use the equations to describe the advantages of power transmission at high potential differences. The lesson was written for AQA GCSE Physics but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam questions, tasks and answers on Current, Resistance and Potential Difference for AQA GCSE (9-1) Science / Physics. The lesson covers all of AQA GCSE Physics 4.2.1.3 and a small part of 4.2.4.2 (energy transferred = charge flow x potential difference) because this helps to explain potential difference. This lesson is the second in the Electricity sequence and follows on from Circuits, Current and Charge. As a Secondary Science teacher and Deputy Headteacher for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Worked examples of calculations / questions. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. Learning objectives: Explain what potential difference is and how we measure it. Apply the equation energy transferred = charge flow x potential difference to describe how potential difference relates to energy transfer. Explain what resistance is, what causes it and how we measure it. Describe how the current through a component depends on both resistance and potential difference, and that a greater resistance will result in a smaller current for any given potential difference. Apply the equation potential difference = current x resistance. The lesson was written for AQA GCSE Science / Physics but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam questions, tasks and answers on Latent Heat of Fusion and Vaporisation for AQA GCSE (9-1) Science / Physics. As a Secondary Science teacher and Deputy Headteacher for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. Learning objectives: Define latent heat of fusion and latent heat of vaporisation. Describe what is meant by specific latent heat. Carry out calculations using the specific latent heat of fusion and specific latent heat of vaporisation Written for AQA GCSE Science and Physics but likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam questions, tasks and answers on Convex Lenses for AQA GCSE (9-1) Physics. Includes worksheet and covers part of GCSE Physics 4.6.2.5, with the remainder of this exam spec section in the next lesson. As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Teaching notes • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Worked examples of calculations / questions. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The lesson was written for AQA GCSE Science / Physics but is very likely to be applicable to other exam specifications.

Complete No-Prep lesson with exam questions, tasks and answers on Power (including Work Done) for AQA GCSE (9-1) Science / Physics. This lesson covers all of AQA GCSE Combined Science 6.1.1.4 / GCSE Physics 4.1.1.4. This lesson was updated and improved slightly 01.05.23 As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Worked examples of calculations / questions. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The lesson was written for AQA GCSE Science / Physics but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam questions, tasks and answers on Concave Lenses, Magnification and Magnifying Glasses (Convex Lenses) for AQA GCSE (9-1) Physics. This lesson covers part of GCSE Physics 4.6.2.5, with the remainder of this exam spec section in the previous lesson (“Convex Lenses”). As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Teaching notes • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Worked examples of calculations / questions. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The lesson was written for AQA GCSE Science / Physics but is very likely to be applicable to other exam specifications.

Complete No-Prep lesson with exam questions, tasks and answers on Orbital Motion for AQA GCSE (9-1) Science / Physics. This lesson covers all of AQA GCSE Physics exam spec point 4.8.1.3 As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Teaching notes • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The lesson was written for AQA GCSE Science / Physics but is very likely to be applicable to other exam specifications.

Complete No-Prep DOUBLE length lesson (60+ slides) with exam questions, tasks and answers on Alternating and Direct Current (AC and DC) Alternators, Dynamos, Microphones and Loudspeakers for AQA GCSE (9-1) Science / Physics. As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. The other lessons in this topic are: Magnets and Magnetism: https://www.tes.com/teaching-resource/resource-12592689 Electromagnets and Electromagnetism: https://www.tes.com/teaching-resource/resource-12595426 The Motor Effect and Left Hand Rule: https://www.tes.com/teaching-resource/resource-12596435 The Generator Effect: https://www.tes.com/teaching-resource/resource-12600640 AC, DC, Alternators, Dynamos, Microphones & Loudspeakers: https://www.tes.com/teaching-resource/resource-12609865 Transformers and the National Grid: https://www.tes.com/teaching-resource/resource-12610433 Discounted Bundle: https://www.tes.com/teaching-resource/resource-12610445 What’s Included: Two Starters with answers Explanation slides in five “chunked” sections using animated diagrams Editable diagrams and animations which help aid understanding. Multiple questions in different question styles and difficulties - no need for worksheets. Each of the five “chunked” sections contains a set of “quick” questions and a set of “in-depth” questions. Exam-style questions - these are uniquebased on real exam questions but not just copied from exam boards (in fact there aren’t many exam questions available from the exam boards for this yet) Answers for all questions All easily editable to adapt to your teaching or to use in existing lessons. Slightly humourous, at points, if you like that sort of thing. Learning objectives: Explain how the generator effect is used in an alternator to generate AC and in a dynamo to generate DC Draw and interpret graphs of potential difference generated in the coil against time. Explain how a moving-coil microphone and loudspeaker / headphone work. The lesson was written for AQA GCSE Physics but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam questions, tasks and answers on Reflection for AQA GCSE (9-1) Science / Physics. This lesson covers all of AQA GCSE Physics 4.6.1.3 Reflection of Waves and the part of 4.6.2.6 Visible Light that relates to specular and diffuse reflection. This lesson has been written so that it can be taught in the order specified in the exam spec / waves topic, or taught as part of a “light” topic as some schools prefer. However, if taught as part of a “light” topic please remember that students may be asked about reflection in contexts other than light – the lesson emphasises that reflection is not only a property of light waves. As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Teaching notes • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The lesson was written for AQA GCSE Science / Physics but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam questions, tasks and answers on Useful and Wasted Energy for AQA GCSE (9-1) Science / Physics. This lesson covers the parts of of AQA GCSE Combined Science 6.1.2.1 / GCSE Physics 4.1.2.1 relating to useful and wasted energy (the parts on thermal conduction are in the next lesson). As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Worked examples of calculations / questions. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The lesson was written for AQA GCSE Science / Physics but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam questions, tasks and answers on Red-Shift and the Big Bang for AQA GCSE (9-1) Science / Physics. This lesson covers all of AQA GCSE Physics exam spec point 4.8.2 As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Teaching notes • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The lesson was written for AQA GCSE Science / Physics but is very likely to be applicable to other exam specifications.

Complete No-Prep lesson with exam questions, tasks and answers on Our Solar System and the Birth of Stars for AQA GCSE (9-1) Science / Physics. This lesson covers all of AQA GCSE Physics exam spec point 4.8.1.1 As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Teaching notes • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The lesson was written for AQA GCSE Science / Physics but is very likely to be applicable to other exam specifications.