This lesson can be purchased as part of the IB Complete course bundle (first exams 2025) at a heavily discounted price, formed of 40 fully resourced lessons, end of topic exams and student checklists. It can be found here This PowerPoint contains everything you need to teach the B4.2 Ecological niches in the new IB Biology specification. **YouTube video is a preview of the full resource (does not include all slides) ** This Powerpoint consists of 60 slides and contains the followings: All the information the IB have included in the new spec. Exam tips Clear diagrams Student research tasks Clearly identified HL and SL content Student checklist Summary The following content is included: B4.2.1: Explain what biotic and abiotic interactions are and how they influence growth, survival and reproduction, including how a species obtains food. B4.2.2: Explain the differences between obligate anaerobes, facultative anaerobes and obligate aerobes. B4.2.3: Summarise the process of photosynthesis as the mode of nutrition in plants, algae and several groups of photosynthetic prokaryotes. B4.2.4: Explain the various modes of holozoic, mixotrophic, saprotrophic nutrition. B4.2.5: Give details of the diversity of nutrition in archaea. B4.2.6: Summarise the relationship between dentition and the diet of omnivorous and herbivorous representative members of the family Hominidae. B4.2.7: Infer the diet of several hominid species from anatomical features. B4.2.8: Describe the adaptations of herbivores for feeding on plants and of plants for resisting herbivory. B4.2.9:Describe the adaptations of predators for finding, catching and killing prey and of prey animals for resisting predation. B4.2.10: Describe the adaptations of plants for harvesting light. B4.2.11: Describe and explain the differences between the fundamental and the realised niches. B4.2.12:Explain the concept of competitive exclusion and the uniqueness of ecological niches

This bundle contains all the resources you need to teach the new IB Biology specification. It includes 40 fully resourced units of work and assessment bundles, including: A1.1: Water A1.2: Nucleic acids A2.1: Origins of cells A2.2.: Cell structure A2.3: Viruses (HL only) A3.1: Diversity in organisms A3.2: Classification and Cladistics A4.1: Evolution and speciation A4.2: Ecosystems B1.1: Lipids & Carbohydrates B1.2: Proteins B2.1: Membranes & transport B2.2: Organelles and Compartmentalisation B2.3: Cell specialisation B3.1: Gas exchange B3.2: Transport B3.3: Muscles & motility B4.1: Adaptations to environments B4.2: Ecological niches C1.1: Enzymes C1.2: Respiration C1.3: Photosynthesis C2.1: Chemical signalling (HL only) C2.2: Neural signalling C3.1: Integration of body systems C3.2: Defence against disease C4.1: Populations and communities C4.2: Transfer of energy and matter D1.1: DNA replication D1.2: Protein synthesis D1.3: Mutations and gene editing D2.1: Cell and nuclear division D2.2: Gene expression D2.3: Water potential D3.1: Reproduction D3.2: Inheritance D3.3: Homeostasis D4.1: Natural selection D4.2: Stability and change D4.3: Climate change This bundle contain the followings: All the information the IB have included in the new spec. Clear diagrams Student friendly content Summary videos Student research tasks Clearly identified HL and SL content Student checklist Summary Now includes end of unit assessments for Theme A (9 assessments), Theme B (10 assessments), Theme C (10 assessments) and Theme D (12 assessments) **All lessons can be bought individually from my store, but this resource provides a saving of over 80GBP (too many files to form a bundle) ** Note: Please leave a review, this would help other educators make better informed decisions.

This PowerPoint contains everything you need to teach the Theme/Unit C4.1 populations and communities in the new IB Biology specification. **YouTube video is a preview of the full resource (does not include all slides) ** This Powerpoint consists of over 80 slides and contains the followings: All the information the IB have included in the new spec. Clear diagrams Student friendly content Summary videos Student research tasks Clearly identified HL and SL content Student checklist Exam style questions Summary The following content is included: C4.1.1: Define the term population. C4.1.2: Outline reasons for estimating population samples. C4.1.3: Analyse and explain the importance of using random sampling techniques in ecological studies. C4.1.4: Outline how quadrat sampling is used to estimate the population size for sessile organisms. C4.1.5: Outline how the capture-mark-release-recapture method and the Lincoln index are implemented to estimate the population size of a motile species.  C4.1.6: Define carrying capacity and explain why population growth slows down as the carrying capacity is reached. C4.1.7: Distinguish between density-dependent and density-independent limiting factors. C4.1.8: Compare and contrast exponential and sigmoidal population growth models. C4.1.8: Evaluate the use of models as representations of natural phenomena. C4.1.9: Describe the impact of intraspecific competition and cooperation on the survival and reproduction of a population. C4.1.10: Define communities as diverse collections of populations that interact and contribute to the functioning of ecosystems. C4.1.11: Distinguish between multiple interspecific interactions. C4.1.12: Discuss the ecological significance of interactions between species. C4.1.13: Outline examples of herbivory, predation, competition, parasitism, pathogenicity and mutualism. C4.1.14: Evaluate the impact of invasive species on endemic species. C4.1.15: Outline the role of human activities in the introduction and spread of invasive species. C4.1.16: Assess the presence of interspecific competition using different testing methods. C4.1.17: Apply the chi-squared test to determine an association between species. C4.1.18: Interpret the results of a chi-squared test to generate accurate conclusions. C4.1.19: Evaluate the validity of the chi-squared test as a statistical method for analysing associations between categorical variables. C4.1.20:Evaluate the influence of predator–prey interactions on population dynamics using real case studies. C4.1.21: Discuss the implications of top-down and bottom-up control in population regulation within communities. C4.1.22: Compare and contrast allelopathy and antibiotic secretion mechanisms of competitive advantage in different organisms

This lesson can be purchased as part of the IB Complete course bundle (first exams 2025) at a heavily discounted price, formed of 40 fully resourced lessons, end of topic exams and student checklists. It can be found here This PowerPoint contains everything you need to teach the B3.1 Gas exchange in the new IB Biology specification. **YouTube video is a preview of the full resource (does not include all slides) ** This Powerpoint consists of 90 slides and contains the followings: All the information ( HL) the IB have included in the new spec. Exam tips Clear diagrams Student research tasks Clearly identified HL and SL content Student checklist Summary The following content is included: B3.1.1: Outline the need for gas exchange in living organisms. B3.1.2: Describe properties of gas-exchange surfaces. B3.1.3: Explain how concentration gradients are maintained at exchange surfaces in animals. B3.1.4: Describe the adaptations of mammalian lungs for gas exchange. B3.1.5: Explain the process of ventilation. B3.1.6: Determine measurements of lung volumes. B3.1.7: Outline the adaptations of leaves for gas exchange. B3.1.8: Draw and label a plan diagram to show the distribution of tissues in a transverse section of a dicotyledonous leaf. B3.1.9: Outline the process of transpiration and the factors that affect the rate of transpiration. B3.1.10: Determine stomatal density. B3.1.11: Outline the adaptations of foetal and adult haemoglobin for the transport of oxygen. B3.1.12: Explain the Bohr shift and the benefits for respiring tissues. B3.1.13: Analyse and explain oxygen dissociation curves.

This bundle contains 41 comprehensive checklist for the IB Biology (first exams 2025) syllabus. Each checklist contains a detailed breakdown of the content students are expected to know. The checklist use a RAG system (Red, Amber, Green) which students use to evaluate their understanding: Red: Students is not familiar with the objective and need to revise Amber: Student is somewhat familiar with the objective but still need to revise Green: Student is confident with the objective. These checklist are fantastic for supporting students with their revision for either end of year exams, end of topic revision or for their actual IB exams. Both word and pdf versions

This excellent resource contains 2-3 lessons which cover Chemical energetics. Each lesson contains a starter activity with answers, notes, research tasks, questions with answers, practicals. The lessons include the follwing content: Core: State that an exothermic reaction transfers thermal energy to the surroundings leading to an increase in the temperature of the surroundings State that an endothermic reaction takes in thermal energy from the surroundings leading to a decrease in the temperature of the surroundings Interpret reaction pathway diagrams showing exothermic and endothermic reactions Supplement: State that the transfer of thermal energy during a reaction is called the enthalpy change, ∆H, of the reaction. ∆H is negative for exothermic reactions and positive for endothermic reactions Define activation energy, Ea , as the minimum energy that colliding particles must have to react Draw and label reaction pathway diagrams for exothermic and endothermic reactions using information provided, to include: (a) reactants (b) products © enthalpy change of the reaction, ∆H (d) activation energy, Ea State that bond breaking is an endothermic process and bond making is an exothermic process and explain the enthalpy change of a reaction in terms of bond breaking and bond making Calculate the enthalpy change of a reaction using bond energies **This resource can be used to teach IGCSE Chemistry (C5) or iGCSE Co-ordinated science (C6). **

This lesson can be purchased as part of the IB Complete course bundle (first exams 2025) at a heavily discounted price, formed of 40 fully resourced lessons, end of topic exams and student checklists. It can be found here This PowerPoint contains everything you need to teach the Theme/Unit D4.1: Natural selection in the new IB Biology specification. YouTube video is a preview of the full resource (does not include all slides) This Powerpoint consists of over 80 slides and contains the followings: All the information the IB have included in the new spec. Clear diagrams Student friendly content Summary videos Student research tasks Clearly identified HL and SL content Student checklist Summary The following content is included: D4.1.1: Recognise that natural selection is the mechanism that drives evolutionary change. D4.1.2: Explain the roles of mutation and sexual reproduction in generating variation. D4.1.3: Identify and explain the biotic and abiotic factors that promote natural selection. D4.1.4: Explain that differences in adaptation, survival and reproduction form the basis of natural selection. D4.1.5: Recall that heritable changes lead to evolutionary change. D4.1.6: Define sexual selection as a special case of natural selection. D4.1.7: Describe the effects of sexual and natural selection through simulation of selection pressure. D4.1.8: Define the concept of a gene pool. D4.1.9: Describe the changes that occur in allele frequencies in geographically isolated populations. D4.1.10: State the causes for the changes in allele frequency in the gene pool. D4.1.11:  Differentiate among directional, disruptive and stabilising selection. D4.1.12: Define Hardy-Weinberg equilibrium. D4.1.13: Identify the Hardy-Weinberg conditions that need to be maintained for genetic equilibrium in a population

This lesson can be purchased as part of the IB Complete course bundle (first exams 2025) at a heavily discounted price, formed of 40 fully resourced lessons, end of topic exams and student checklists. It can be found here This PowerPoint contains everything you need to teach the Theme/Unit C3.2 Defence against diseases in the new IB Biology specification. **YouTube video is a preview of the full resource (does not include all slides) ** This Powerpoint consists of over 90 slides and contains the followings: All the information the IB have included in the new spec. Exam tips Clear diagrams Summary videos Student research tasks Clearly identified HL and SL content Student checklist **Exam style questions Summary The following content is included: C3.2.1: Identify the categories of pathogens. C3.2.2: Describe the role of the skin and mucous membranes in primary defence of the body. C3.2.3: Explain the process of clotting of blood. C3.2.4: Differentiate between innate immune system and adaptive immune system. C3.2.5: State the role of phagocytes in controlling infection. C3.2.6: Explain the role of lymphocytes in adaptive immune responses. C3.2.7: Recall that antigens trigger antibody production. C3.2.8: Explain the activation of T-lymphocytes by helper T-cells. C3.2.9: Outline the role of activated B-lymphocytes in production of sufficient quantities of antibodies. C3.2.10: Describe the role of memory cells in immunity. C3.2.11: Describe the means of transmission of HIV. C3.2.12: Study the effect of the virus on the functioning of the immune system (lymphocytes) C3.2.13: State the role of antibiotics in controlling bacterial infections. C3.2.14: Infer the causes of bacterial resistance. C3.2.15: Explain the transmission of zoonotic diseases. C3.2.16: Explain the role of vaccines in developing immunity. C3.2.17: Describe the interdependence of a population in building herd immunity. C3.2.18: Evaluate data related to COVID-19 pandemic

This lesson can be purchased as part of the IB Complete course bundle (first exams 2025) at a heavily discounted price, formed of 40 fully resourced lessons, end of topic exams and student checklists. It can be found here This PowerPoint contains everything you need to teach the Theme/Unit D3.3: Homeostasis in the new IB Biology specification. YouTube video is a preview of the full resource (does not include all slides) This Powerpoint consists of over 50 slides and contains the followings: All the information the IB have included in the new spec. Clear diagrams Student friendly content Summary videos Student research tasks Clearly identified HL and SL content Student checklist Summary The following content is included: D3.3.1: Define the concept of homeostasis in relation to specific examples of variables. D3.3.2: Explain the role of negative feedback mechanisms in maintaining homeostasis. D3.3.3: Outline the role of pancreatic hormones in regulating blood glucose. D3.3.4: Outline the role of negative feedback mechanisms in regulating blood glucose. D3.3.5: Describe the physiological changes that form the basis of type 1 and type 2 diabetes. D3.3.6: Describe the roles of thermoreceptors and hypothalamus in regulating body temperature. D3.3.7: Outline the mechanisms in regulating human body temperature. D3.3.8: Define osmoregulation and excretion. D3.3.9: Explain the roles of the glomerulus, Bowman’s capsule and proximal convoluted tubule in excretion. D3.3.10: Outline the functions of the loop of Henle and collecting ducts. D3.3.11: Explain the effect of ADH on the permeability of the kidney tubules. D3.3.12: Describe examples of changes in blood supply in response to changes in activity.

This bundle consists of 9 end of unit exams for Theme/Unit C of the new IB Biology specification: C1.1: Enzymes C1.2: respiration C1.3: photosynthesis C2.1: Chemical signalling (HL only) C2.2: Neural signalling C3.1: Integration of body systems C3.2: Defence against disease C4.1: Populations and communities C4.2: Transfer of energy and matter Each exam can be used as an end of topic exam and consists of: 10 multiple choice questions Questions using IB command terms: state, explain, analyse, describe Data based question Mark schemes included

This lesson can be purchased as part of the IB Complete course bundle (first exams 2025) at a heavily discounted price, formed of 40 fully resourced lessons, end of topic exams and student checklists. It can be found here This PowerPoint contains everything you need to teach the B3.3 Muscle and motility in the new IB Biology specification. **YouTube video is a preview of the full resource (does not include all slides) ** This Powerpoint consists of 68 slides and contains the followings: All the information ( HL) the IB have included in the new spec. Exam tips Clear diagrams Student research tasks Clearly identified HL and SL content Student checklist Summary The following content is included: B3.3.1: Recognise the concept of movement in different species. B3.3.2: Outline the structure of a sarcomere. B3.3.3: Explain how a sarcomere contracts. B3.3.4: Outline the role of titin and antagonistic muscles in muscle relaxation. B3.3.5: Describe the structure and function of motor units in skeletal muscles. B3.3.6: Outline the role of the skeleton as anchorage for muscles and as levers. B3.3.7: Explain the role of the different components of a joint. B3.3.8: Compare the range of motion of a joint. B3.3.9: Explain the antagonistic action of the internal and external intercostal muscles. B3.3.10: Give examples of reasons for locomotion. B3.3.11: Describe adaptations for swimming in marine mammals.

This lesson can be purchased as part of the IB Complete course bundle (first exams 2025) at a heavily discounted price, formed of 40 fully resourced lessons, end of topic exams and student checklists. It can be found here This PowerPoint contains everything you need to teach the A2.2 Cell Structure in the new IB Biology specification for both HL and SL. This Powerpoint consists of 114 slides and contains the followings: All the information (both SL and HL) the IB have included in the new spec. Exam tips Clear diagrams Videos Student questions with answers Clearly identified HL and SL content Student checklist Updated November 2024 The following content is included: A2.2.1: cells as the basic structural unit of life. A2.2.2: Microscopy skills A2.2.3: Development of microscopes A2.2.4: Structures which are common to cells in all living things A2.2.5: Structure of prokaryotic cells A2.2.6: Eukaryotic cell structure A2.2.7: Processes of life in unicellular organisms A2.2.8: Differences in eukaryotic cell structure between animal, fungi and plants A2.2.9: Atypical structures in eukaryotes A2.2.10: Cell types and structures viewed in light and electron microscopes A2.2.11: Drawing and annotating based on electron micrographs. A2.2.12: Origin of eukaryotic cells by endosymbiosis A2.2.13: Cell differentiation as the process for developing specialised tissues in organisms Note: Please review and provide feedback

Full resources bundle which you can use to teach topic 18 (iGCSE Cambridge). Contains: Contains 7 lessons (DNA, Variation, mutations, plant and animal adaptations, natural selection and evolution, antibiotic resistance and selective breeding. Contains starter tasks and regular assessment questions with answers Student check list Revision questions

This lesson can be purchased as part of the IB Complete course bundle (first exams 2025) at a heavily discounted price, formed of 40 fully resourced lessons, end of topic exams and student checklists. It can be found here This PowerPoint contains everything you need to teach the A3.1 Diversity of Organisms in the new IB Biology specification. This Powerpoint consists of 93 slides and contains the followings: All the information ( HL) the IB have included in the new spec. Exam tips Clear diagrams Videos Student research tasks Clearly identified HL and SL content The following content is included: A3.1.1: variation between organisms as a defining feature of life. A3.1.2: Species as groups of organisms with shared traits. A3.1.3: Binominal system for naming organisms A3.1.4: Biological species concept A3.1.5: Difficulties distinguishing between populations and species due to divergence and non-interbreeding populations during speciation. A3.1.6: Diversity in chromosome numbers of plant and animal species. A3.1.7: Karyotyping and karyograms A3.1.8: Unity and diversity of genomes between species. A3.1.8: Diversity of eukaryotic genomes A3.1.10: Comparison of genome sizes A3.1.11: Current and potential future uses of whole genomic sequencing. A3.1.12: Difficulties applying the biological species concept to asexually reproducing species and to bacteria that have horizontal gene transfer (HL only). A3.1.13: Chromosome number as a shared trait within a a species. A3.1.14: Engagement with local plant or animal species to develop dichotomous keys. A3.1.15: Identification of species from environmental DNA in a habitat using barcodes.

This bundle consists of 12 end of unit exams for: D1.1: DNA replication D1.2: Protein synthesis D1.3: Mutations and gene editing D2.1: Cell and nuclear division D2.2: Gene expression D2.3: Water potential D3.1: Reproduction D3.2: Inheritance D3.3: Homeostasis D4.1: Natural selection D4.2: Stability and change D4.3: Climate change Each exam can be used as an end of topic exam and consists of: 8-10 multiple choice questions Questions using IB command terms: state, explain, analyse, describe Data based question Mark schemes included

Excellent resource suitable for both iGCSE/GCSE Physics syllabus. The lesson includes a starter tasks, videos, student friendly content and questions with answers. Lesson will take 2-3 hours to teach. The content covered includes: Recap of refraction Converging/convex lens: Explanations and how to draw diagrams Step by step instructions on how to draw lens diagrams using convex lens Diverging/concave lens: Explanations and how to draw diagrams Step by step instructions on how to draw lens diagrams using concave lens Calculating magnification using lens diagrams. Refractive index: Snells law Internal reflection and Total internal reflection Calculating the critical angle

This bundle consists of 9 end of unit exams for: A1.1 Water A1.2 Nucleic acids A2.1: Origins of cells A2.2: Cell structure A2.3: Viruses A3.1: Diversity in organisms A3.2: Classification & cladisitics A4.1: Evolution & Speciation A4.2: Ecosystems Exam exam can be used as an end of topic exam and consists of: 7-10 multiple choice questions Questions using IB command terms: state, explain, analyse, describe Data based question Mark schemes included

Lesson on the rock cycle, used in an observation for a middle ability year 8 class.

This resource is perfect for teaching meiosis and mitosis to a year 10/11 class studying GCSE or iGCSe biology. The lesson contains: Starter tasks Recap tasks All key information for explaining mitosis and meiosis Differeneces between the two forms of cell division.

Excellent resources which covers the blood and blood vessels. It includes: Starter tasks Components of the blood Sickle cell anemia Videos