An engaging lesson presentation (39 slides) with associated differentiated worksheets that looks at they key differences between pure and impure substances and briefly explores how a mixture like an alloy can still be very useful. The lesson begins by challenging the students to recognise 4 diagrams of pure substances from a selection of 5. This will lead students to the definition of pure (in Science) which is likely to be different to what they have encountered in everyday language. The next task gets the students to draw a graph showing the melting and boiling points of pure water. This will enable them to compare the melting point against that of an impure substance and therefore recognise that this difference can be used as point to decide on purity. An example of gritting is used to explain how this change in melting point can be utilised and then the students are challenged to apply this new-found knowledge to the situation of adding salt to boiling water when making pasta. The remainder of the lesson focuses on some famous mixtures. Beginning with air, students will be able to visualise how this mixture is made of a number of gases, each with different boiling points which allows them to be separated by fractional distillation. Alloys are briefly explored so that students know why these mixtures are used for certain functions over pure metals and the summary passage for this task has been differentiated two ways so that all can access the work. Progress checks have been written into the lesson at regular intervals so that students can check their understanding and a range of quick quiz competitions are used to maintain engagement whilst introducing new terms in a fun manner. If you want to look into alloys in greater detail, then this lesson could be combined with the one named “alloys” which is also uploaded.

An informative lesson presentation (37 slides) and associated question worksheet which looks at the key properties of alpha, beta and gamma radiation. Students are given key pieces of information during the lesson and are then challenged to use their knowledge of related topics such as atomic structure and waves to complete the information table about the types of radiation. By the end of the lesson, students will be able to compare the types of radiation on form, charge, relative mass, penetrating power and equation symbols. Progress checks have been written into the lesson at regular intervals so that students can constantly assess their understanding. This lesson has been written for GCSE students (14 - 16 year olds in the UK).

This is a concise REVISION lesson that contains an engaging powerpoint (43 slides) and associated worksheets. The lesson uses a range of activities which include exam questions (with displayed answers), differentiated tasks and quiz competitions to engage students whilst they assess their knowledge of the content that is found within topic P8 (Space Physics) of the AQA 9-1 GCSE Physics specification. The following sub-topics in the specification are covered in this lesson: Our Solar System The life cycle of a star Natural satellites Red-shift This lesson can be used throughout the duration of the GCSE course, as an end of topic revision lesson or as a lesson in the lead up to mocks or the actual GCSE exams

This engaging lesson looks at the structure of the quaternary protein, haemoglobin, and describes its role with red blood cells in the transport of oxygen. The PowerPoint has been designed to cover the first part of point 3.4.1 of the AQA A-level Biology specification and explains how the cooperative nature of binding results in a loading of each molecule with 4 oxygen molecules and describes how it is unloaded at the respiring cells too. The lesson begins with a version of the quiz show Pointless to introduce haemotology as the study of the blood conditions. Students are told that haemoglobin has a quaternary structure and are challenged to use their prior knowledge of biological molecules to determine what this means for the protein. They will learn that each of the 4 polypeptide chains contains a haem group with an iron ion attached and that it is this group which has a high affinity for oxygen. Time is taken to discuss how this protein must be able to load (and unload) oxygen as well as transport the molecules to the respiring tissues. Students will plot the oxyhaemoglobin dissociation curve and the S-shaped curve is used to encourage discussions about the ease with which haemoglobin loads each molecule. Students will learn that a conformational change upon binding of the first oxygen leads to it being easier to bind future oxygens and that this is known as cooperative binding. This lesson has been written to tie in with the other uploaded lesson on the Bohr effect.

This fully-resourced lesson explores the contributions of the chromosome mutations that arise during meiosis to genetic variation. The engaging PowerPoint and accompanying worksheets have been designed and written to cover the part of point 4.3 of the AQA A-level Biology specification which states that students should be able to describe how mutations in the numbers of chromosomes can arise spontaneously and significantly contribute to evolution. Over the course of the lesson, students will encounter a number of chromosome mutations but the main focus is chromosome non-disjunction and they will learn that this can result in Down, Turner’s and Klinefelter’s syndromes. Students are guided through a description of the formation of gametes and zygotes with abnormal numbers of chromosomes before being challenged to describe the formation of a zygote with Turner’s syndrome. The key aspects of meiosis, which are taught in a future lesson, are introduced and related to the lead up to the change in chromosome number. Inversion, translocation, duplication and deletion are also introduced and links are made to other topics such as regulatory sequences and gene expression.

This fully-resourced lesson describes the non-specific responses of the body to infection and includes details of phagocytosis, inflammation and interferon release. The engaging and detailed PowerPoint and accompanying resources have been primarily designed to cover the content of point 6.7 of the Pearson Edexcel A-level Biology A specification but topics including antigen-presentation are also introduced to prepare students for upcoming lessons on the immune response (6.8 & 6.9). At the start of the lesson, the students are challenged to recall that cytosis is a suffix associated with transport mechanisms and this introduces phagocytosis as a form of endocytosis which takes in pathogens and foreign particles. This emphasis on key terminology runs throughout the course of the lesson and students are encouraged to consider how the start or end of a word can be used to determine meaning. The process of phagocytosis is then split into 5 key steps and time is taken to discuss the role of opsonins as well as the fusion of lysosomes and the release of lysozymes. A series of application questions are used to challenge the students on their ability to make links to related topics including an understanding of how the hydrolysis of the peptidoglycan wall of a bacteria results in lysis. Students will be able to distinguish between neutrophils and monocytes from a diagram and at this point, the role of macrophages and dendritic cells as antigen-presenting cells is described so that it can be used in the next lesson. The importance of cell signalling for an effective immune response is discussed and the rest of the lesson focuses on the release of two chemicals - interferons and histamine. During the interferon section, references are made to a previous lesson on HIV structure and action so students can understand how the release of these signalling proteins helps neighbouring cells to heighten their anti-viral defences. A step by step guide is used to describe the release of histamine in the inflammatory response and the final task challenges students to use this support to form a detailed answer regarding the steps in inflammation.

An engaging lesson presentation (95 slides) and associated worksheets that uses a combination of exam questions, quick tasks and quiz competitions to help the students to assess their understanding of the topics found within TOPIC 4 (Chemical changes) of the AQA GCSE Chemistry specification (specification point C4.4) The topics that are tested within the lesson include: Reactivity series Extraction of metals and reduction Oxidation and reduction in terms of electrons Reactions of metals with acids Neutralisations Titrations Electrolysis Half equations Students will be engaged through the numerous activities including quiz rounds like “It’s time for ACTION” and “Number CRAZY” whilst crucially being able to recognise those areas which need further attention

A detailed lesson presentation (37 slides) and associated worksheets that guide students through the DNA sequencing method called pyrosequencing. The lesson focusses on the numerous enzymes and substrates which are involved in the cascade of events which eventually leads to the production of light when the conversion from luciferin to oxyluciferin occurs. A step by step guide is used to show the students how these events occur and the different outcomes are explored. There are regular progress checks throughout the lesson so that students can assess their understanding of this topic and the links to similar topics. This lesson has been designed for A-level students and above

An engaging lesson presentation (68 slides) and associated worksheets that uses a combination of exam questions, quick tasks and quiz competitions to help the students to assess their understanding of the topics found within the Biology topic B4 (Bioenergetics) of the AQA GCSE Combined Science specification (specification unit B4.4). The topics that are tested within the lesson include: Photosynthesis reaction Rate of photosynthesis Uses of glucose from photosynthesis Aerobic respiration Anaerobic respiration Response to exercise Students will be engaged through the numerous activities including quiz rounds like “Take a STEP back” and “Shine a LIGHT on the errors” whilst crucially being able to recognise those areas which need further attention

An engaging lesson presentation (63 slides) and associated worksheets that uses a combination of exam questions, quick tasks and quiz competitions to help the students to assess their understanding of the topics found within the Biology unit B7 (Ecology) of the AQA GCSE Combined Science specification (specification unit B4.7). The topics that are tested within the lesson include: Communities Abiotic factors Biotic factors Levels of organisation Recycling materials Deforestation Global warming Students will be engaged through the numerous activities including quiz rounds like “Number CRAZY" whilst crucially being able to recognise those areas which need further attention

An engaging lesson presentation (70 slides) and associated worksheets that uses a combination of exam questions, quick tasks and quiz competitions to help the students to assess their understanding of the topics found within the Chemistry unit C1 (Atomic structure and the Periodic Table) of the AQA GCSE Combined Science specification (specification unit C5.1). The topics that are tested within the lesson include: Mixtures Development of the model of the atom The subatomic particles Electronic structure The periodic table Metals and non-metals Group 0 Group 1 Group 7 Students will be engaged through the numerous activities including quiz rounds like “UNLOCK the safe" whilst crucially being able to recognise those areas which need further attention

An engaging lesson presentation (42 slides) and associated worksheet that uses a combination of exam questions, understanding checks, quick tasks and a quiz competition to help the students to assess their understanding of the topics found within the Chemistry unit C5 (Energy changes) of the AQA GCSE Combined Science specification (specification point C5.5). The lesson includes useful hints and tips to encourage success in assessments. For example, students are shown how to use the energy change in a chemical reaction to work out if it is an endothermic or exothermic reaction. The topics that are tested within the lesson include: Endothermic and exothermic reactions Reaction profiles Calculating energy changes in reactions Students will be engaged through the numerous activities including a summary round called “E NUMBERS” which requires them to use all of their knowledge to work out the type of reactions that are shown.

This fully-resourced lesson describes how antibodies are used in the enzyme-linked immunosorbent assay (ELISA) test. The PowerPoint and accompanying resources are part of the last lesson in a series of 7 which have been designed to cover the details within point 2.4 of the AQA A-level specification. As the last lesson in this sub-topic, prior knowledge checks are included throughout the lesson which challenge the students on their knowledge of antibodies, immunity and protein structure. The lesson begins by challenging the students to use the details of a poster to recognise that individuals who have recovered from COVID-19 could donate plasma and the antibodies be infused into newly infected individuals. They are then expected to answer a series of exam-style questions where they have to describe the structure of these specific antibodies, recognise this as artificial, passive immunity and describe the potential problems should the virus mutate and the shape of its antigens change. This leads into the introduction of the use of antibodies in other ways, namely the ELISA test. The methodology of this test has been divided into four key steps which students will consider one at a time and then answer further questions about key details such as the immobilisation of the antigen and the removal of proteins and antibodies that have not bound by the washing with the detergent after each step. The lesson focuses on the use of this test for medical diagnosis but other uses such as plant pathology and the detection of allergens is briefly introduced at the end of the lesson.

This fully-resourced lesson describes the differences between continuous and discontinuous variation and intraspecific and interspecific variation. The engaging PowerPoint and accompanying resources have been designed to cover the first part of point 4.2.2 (f) of the OCR A-level Biology A specification but also acts as a revision tool as a number of activities challenge the students on their knowledge of the genetic code and meiosis from modules 2.1.3 and 2.1.6. The students begin the lesson by having to identify phenotype and species from their respective definitions so that a discussion can be encouraged where they will recognise that phenotypic variation between members of the same species is due to both genetic and environmental factors and that this is known as intraspecific variation. The next part of the the lesson focuses on these genetic factors, and describes how mutation and the events of meiosis contribute to this variation. A range of activities, which include exam-style questions and quick quiz rounds, are used to challenge the students on their knowledge and understanding of substitution mutations and deletions, the degenerate and non-overlapping genetic code, crossing over and independent assortment. Another quick quiz round is used to introduce polygenic inheritance and the link is made between this inheritance of genes at a number of loci as an example of continuous variation. In the following task, the students have to determine whether a statement or example represents discontinuous or continuous variation. The final part of the lesson describes a few examples where environmental factors affect phenotype, such as chlorosis in plants.