A Science teacher by trade, I've also been known to be found teaching Maths and PE! However, strange as it may seem, my real love is designing resources that can be used by other teachers to maximise the experience of the students. I am constantly thinking of new ways to engage a student with a topic and try to implement that in the design of the lessons.
A Science teacher by trade, I've also been known to be found teaching Maths and PE! However, strange as it may seem, my real love is designing resources that can be used by other teachers to maximise the experience of the students. I am constantly thinking of new ways to engage a student with a topic and try to implement that in the design of the lessons.
This lesson describes the main stages of meiosis, focusing on the events which contribute to genetic variation and explains its significance in life cycles. The detailed PowerPoint and accompanying resources have been designed to cover points 2.1.6 (f) & (g) of the OCR A-level Biology A specification and includes description of crossing over, independent assortment, independent segregation and the production of haploid gametes
In order to understand how the events of meiosis like crossing over and independent assortment and independent segregation can lead to variation, students need to be clear in their understanding that DNA replication in interphase results in homologous chromosomes as pairs of sister chromatids. Therefore the beginning of the lesson focuses on the chromosomes in the parent cell and this first part of the cycle and students will be introduced to non-sister chromatids and the fact that they may contain different alleles which is important for the exchange that occurs during crossing over. Time is taken to go through this event in prophase I in a step by step guide so that the students can recognise that the result can be new combinations of alleles that were not present in the parent cell. Moving forwards, the lesson explores how the independent assortment and segregation of chromosomes and chromatids during metaphase I and II and anaphase I and II respectively results in genetically different gametes. The key events of all of the 8 phases are described and there is a focus on key terminology to ensure that students are able to describe genetic structures in the correct context. The final part of the lesson looks at the use of a mathematical expression to calculate the possible combinations of alleles in gametes as well as in a zygote following the random fertilisation of haploid gametes. Understanding and prior knowledge checks are interspersed throughout the lesson as well as a series of exam-style questions which challenge the students to apply their knowledge to potentially unfamiliar situations.
This lesson has been specifically planned to lead on from the previous two lessons on the cell cycle and the main stages of mitosis and constant references are made throughout to encourage students to make links and also to highlight the differences between the two types of nuclear division
This fully-resourced lesson describes the main stages of mitosis and explains the significance of this type of nuclear division in life cycles. The PowerPoint and accompanying resources have been designed to cover points 2.1.6 (c & e) of the OCR A-level Biology A specification and make direct links to the previous lesson which covered the cell cycle
Depending upon the exam board taken at GCSE, the knowledge and understanding of mitosis will differ considerably between students and there may be a number of misconceptions. This was considered at all points during the planning of the lesson so that existing errors are addressed and key points are emphasised throughout. Their understanding of interphase is challenged at the start of the lesson to ensure that they realise that it is identical pairs of sister chromatids that enter the M phase. The main part of the lesson focuses on prophase, metaphase, anaphase and telophase and describes how the chromosomes behave in these stages. There is a focus on the centrioles and the spindle fibres that they produce which contract to drag one chromatid from each pair in opposite directions to the poles of the cell. The remainder of the lesson is a series of understanding and application questions where students have to identify the various roles of mitosis in living organisms as well as tackling a Maths in a Biology context question. The lesson concludes with a final quiz round of MITOSIS SNAP where they only shout out this word when a match is seen between the name of a phase, an event and a picture.
This lesson describes the processes that take place during interphase, mitosis and cytokinesis and outlines how checkpoints regulate the cell cycle. The PowerPoint and accompanying resources have been designed to cover points 2.1.6 (a & b) of the OCR A-level Biology specification and prepares the students for the upcoming lessons on the main stages of mitosis and its significance in life cycles
The students were introduced to the cell cycle at GCSE so this lesson has been planned to build on that knowledge and to emphasise that the M phase which includes mitosis (nuclear division) only occupies a small part of the cycle. The students will learn that interphase is the main stage and that this is split into three phases, G1, S and G2. A range of tasks which include exam-style questions, guided discussion points and quick quiz competitions are used to introduce key terms and values and to describe the main processes that occur in a very specific order. There is also a focus on the checkpoints, such as the restriction point that occurs before the S phase to ensure that the cell is ready for DNA replication. Extra time is taken to ensure that key terminology is included and understood, such as sister chromatid and centromere, and this focus helps to show how it is possible for genetically identical daughter cells to be formed at the end of the cycle. Important details of mitosis are introduced so students are ready for the next lesson, before the differences in cytokinesis in animal and plant cells are described.
This fully-resourced lesson describes how the cells of multicellular organisms are specialised for particular functions and organised into tissues, organs and organ systems. The detailed and engaging PowerPoint and accompanying resources have been designed to cover points 2.1.6 (h, i, j and k) of the OCR A-level Biology A specification and also describes how stem cells differentiate, including the production of erythrocytes (red blood cells) and neutrophils.
The start of the lesson focuses on the difference in the SA/V ratio of an amoeba and a human in order to begin to explain why the process of differentiation is critical for multicellular organisms. Students will discover that a zygote is a stem cell which can express all of the genes in its genome and divide by mitosis. Time is then taken to introduce gene expression as this will need to be understood in the later topics of the course. Moving forwards, the lesson uses the process of haematopoiesis from haematopoietic stem cells to demonstrate how the red blood cell and neutrophil differ significantly in structure despite arising from the same cell along the same cell lineage. A series of exam-style questions will not only challenge their knowledge of structure but also their ability to apply this knowledge to unfamiliar situations. These differences in cell structure is further exemplified by the epithelial cells of the respiratory tract and students will understand why the shape and arrangement of these cells differ in the trachea and alveoli in line with function. The link between specialised cells and tissues is made at this point of the lesson with these examples of epithelium and students will also see how tissues are grouped into organs and then into organ systems.
The remainder of the lesson focuses on specialised plant cells and the differing shapes and features of the palisade and spongy mesophyll cells and the guard cells are covered at length and in detail. Step by step guides will support the students so that they can recognise the importance of the structures and links are made to upcoming topics such as the vascular tissues so that students are prepared for these when covered in the future.
This bundle of 20 lessons covers the majority of the content that’s included in modules 5.1.1 - 5.1.4 of the OCR A-level Biology A specification. All of the lessons are highly detailed and have been planned at length to ensure that they are filled with a wide range of tasks to engage and motivate the students whilst checking on their understanding.
The following specification points are covered by the lessons in this bundle:
5.1.1: Communication and homeostasis
The communication between cells by cell signalling
The principle of homeostasis
The physiological and behavioural responses involved in temperature control in endotherms and ectotherms
5.1.2: Excretion as an example of homeostatic control
The functions of the mammalian liver
The gross structure and histology of the kidney
The processes of ultrafiltration and selective reabsorption
The control of the water potential of the blood
The effects of kidney failure and its potential treatments
5.1.3: Neuronal communication
The roles of mammalian sensory receptors in converting stimuli into nerve impulses
The structure and functions of sensory, relay and motor neurones
The generation and transmission of nerve impulses in mammals
The structures and roles of synapses in transmission
5.1.4: Hormonal communication
Endocrine communication by hormones
The structure and functions of the adrenal glands
The structure of the pancreas
The regulation of blood glucose concentration
The difference between diabetes mellitus type I and II
The potential treatments for diabetes mellitus
It is estimated that it will take in excess of 2 months of allocated A-level teaching time to cover the detail included in these lessons
If you would like to sample the quality of the lessons in this bundle, then download the following lessons as they have been shared for free:
The principles of homeostasis
Temperature control in ectotherms
The functions of the liver
The structure of the kidney
The generation and transmission of nerve impulses
Endocrine communication
This lesson describes how an interaction of muscles, tendons, the skeleton and ligaments is needed for movement of the human body. The PowerPoint and accompanying resources have been designed to cover point 7.9 of the Edexcel International A-level Biology specification and also includes descriptions of antagonistic muscle pairs, extensors and flexors.
At the start of the lesson, the prep room skeleton is used as the example to show that bones without muscles are bones that are unable to move (unaided). Moving forwards, the students will learn that skeletal muscles are attached to bones by bundles of collagen fibres known as tendons and as they covered the relationship between the structure and function of collagen in topic 2, a task is used that challenges their recall of these details. This will allow them to recognise that the ability of this fibrous protein to withstand tension is important for the transmission of the force from the muscle to pull on the moveable bone. A series of quick quiz competitions introduce the key terms of flexion and antagonistic and then an exam-style question challenges them to recognise the structures involved in extension at the elbow. The remainder of the lesson focuses on the role of ligaments and one final example of extension at the knee joint will demonstrate how the interaction of all of the structures met over the course of the lesson is needed for movement
This lesson describes how muscles, tendons, the skeleton and ligaments interact to enable movement. The PowerPoint and accompanying resources have been designed to cover point 7.1 of the Pearson Edexcel A-level Biology A (Salters Nuffield) specification and also includes descriptions of antagonistic muscle pairs, extensors and flexors.
At the start of the lesson, the prep room skeleton is used as the example to show that bones without muscles are bones that are unable to move (unaided). Moving forwards, the students will learn that skeletal muscles are attached to bones by bundles of collagen fibres known as tendons and as they covered the relationship between the structure and function of collagen in topic 2, a task is used that challenges their recall of these details. This will allow them to recognise that the ability of this fibrous protein to withstand tension is important for the transmission of the force from the muscle to pull on the moveable bone. A series of quick quiz competitions introduce the key terms of flexion and antagonistic and then an exam-style question challenges them to recognise the structures involved in extension at the elbow. The remainder of the lesson focuses on the role of ligaments and one final example of extension at the knee joint will demonstrate how the interaction of all of the structures met over the course of the lesson is needed for movement
This bundle of 4 lessons covers the content of module 5.1.1 of the OCR A-level Biology A specification, titled communication and homeostasis. As this module tends to be one of the first to be taught in the second year of the course, it’s extremely important that links are made to upcoming topics as well as challenging the students on their prior knowledge of modules 2 - 4. This is achieved through a wide range of tasks, that include exam-style questions, differentiated tasks and guided discussion periods. Quick quiz competitions are also used to introduce key terms and values in a fun and memorable way.
The following specification points are covered by the 4 lesson PowerPoints and accompanying resources included in this bundle:
The communication between cells by cell signalling
The principles of homeostasis
The differences between negative and positive feedback
The physiological and behavioural responses involved in temperature control in endotherms and ectotherms
As detailed above, these lessons have been specifically planned to tie in with the other parts of module 5, including neuronal communication, hormonal communication and animal and plant responses.
If you would like to sample the quality of the lessons in this bundle, then download the principles of homeostasis and temperature control in ectotherms lessons as these have been uploaded for free
This is a highly engaging and detailed lesson which looks at the physiological and behavioural responses involved in temperature control in endotherms and therefore covers specification point 5.1.1 (d) of the OCR A-level Biology A specification. A wide range of activities have been written into the PowerPoint and accompanying worksheets so that students remain motivated throughout and take a genuine interest in the content. Understanding checks allow the students to assess their progress whilst the prior knowledge checks on topics such as enzymes and denaturation demonstrate the importance of being able to make connections and links between topics from across the specification. In addition to these checks, quiz competitions like HAVE an EFFECT which is shown in the cover image are used to introduce key terms and values in a fun and memorable way.
The lesson begins by introducing the key term, endotherm, and challenging students to use their prior knowledge and understanding of terminology to suggest what this reveals about an organism. Moving forwards, students will learn how the heat generated by metabolic reactions is used as a source of internal heat. The main part of the lesson focuses on thermoregulation in humans (mammals) and time is taken to focus on the key components, namely the sensory receptors, the thermoregulatory centre in the hypothalamus and the responses brought about by the skin. The important details of why the transfer of heat energy between the body and the environment actually leads to a decrease in temperature are explored and discussed at length to ensure understanding is complete. Students are challenged to write a detailed description of how the body detects and responds to a fall in body temperature and this task is differentiated for those students who need some extra assistance. The peripheral thermoreceptors are introduced and this leads into the final section of the lesson that considers behavioural responses in humans and other animals.
This lesson has been designed for A-level students studying the OCR A-level Biology A course
This lesson describes how communication occurs between cells by cell signalling. The PowerPoint and accompanying resource have been designed to cover point 5.1.1 (b) of the OCR A-level Biology A specification and focuses on the use of the nervous system for communication between the CNS and effectors and the release of hormones to bring about responses.
As this is one of the first lessons to be delivered in module 5, this lesson has been specifically planned to prepare students for the upcoming topics of neuronal and hormonal communication. Students begin by learning that cell signalling governs the basic activities of cells and coordinates multiple cell actions. Moving forwards, the next part of the lesson focuses on the nervous system and students will learn that an electrical impulse will be conducted on a somatic or an autonomic motor neurone depending upon the type of muscle to be stimulated. This provides some introductory information for modules 5.1.3 and 5.1.5. The remainder of the lesson describes how the hormones that are secreted by the cells of endocrine glands allow communication with target cells and the different actions of peptide and steroid hormones is considered.
This lesson describes the importance of homeostasis using negative feedback control and also describes the meaning of positive feedback. The PowerPoint and accompanying resources have been designed to the content with point 9.1 of the Edexcel A-level Biology B specification and explains how this feedback control maintains systems within narrow limits but has also been planned to provide important details for upcoming topics such as osmoregulation, thermoregulation and the depolarisation of a neurone.
The normal ranges for blood glucose concentration, blood pH and body temperature are introduced at the start of the lesson to allow students to recognise that these aspects have to be maintained within narrow limits. A series of exam-style questions then challenge their recall of knowledge from topics 1-8 to explain why it’s important that each of these aspects is maintained within these limits. The students were introduced to homeostasis at GCSE, so this process is revisited and discussed, to ensure that students are able to recall that this is the maintenance of a state of dynamic equilibrium. A quick quiz competition is used to reveal negative feedback as a key term and students will learn how this form of control reverses the original change and biological examples are used to emphasise the importance of this system for restoring levels to the limits (and the optimum). The remainder of the lesson explains how positive feedback differs from negative feedback as it increases the original change and the role of oxytocin in birth and the movement of sodium ions into a neurone are used to exemplify the action of this control system.
This lesson explains how negative feedback control maintains systems within narrow limits and uses biological examples to describe the meaning of positive feedback. The PowerPoint and accompanying resources have been designed to cover points 7.11 (i) and (ii) of the Pearson Edexcel A-level Biology A (Salters Nuffield) specification but have been planned to provide important details for upcoming topics such as the importance of homeostasis during exercise and the depolarisation of a neurone.
The normal ranges for blood glucose concentration, blood pH and body temperature are introduced at the start of the lesson to allow students to recognise that these aspects have to be maintained within narrow limits. A series of exam-style questions then challenge their recall of knowledge from topics 1 - 6 as well as earlier in topic 7 to explain why it’s important that each of these aspects is maintained within these limits. The students were introduced to homeostasis at GCSE, so this process is revisited and discussed, so that students are prepared for an upcoming lesson on exercise, as well as for the next part of the lesson on negative feedback control. Students will learn how this form of control reverses the original change and biological examples are used to emphasise the importance of this system for restoring levels to the limits (and the optimum). The remainder of the lesson explains how positive feedback differs from negative feedback as it increases the original change and the role of oxytocin in birth and the movement of sodium ions into a neurone are used to exemplify the action of this control system.
This lesson describes the meaning of positive feedback and explains how negative feedback control is involved in maintaining systems within narrow limits. The PowerPoint and accompanying resources have been designed to cover points 7.16 (i) and (ii) of the Edexcel International A-level Biology specification but also provide introductory details for upcoming topics such as the importance of homeostasis during exercise and the depolarisation of a neurone.
The normal ranges for blood glucose concentration, blood pH and body temperature are introduced at the start of the lesson to allow students to recognise that these aspects have to be maintained within narrow limits. A series of exam-style questions then challenge their recall of knowledge from topics 1 - 6 as they have to explain why it’s important that each of these aspects is maintained within these limits. The students were introduced to homeostasis at GCSE, so this process is revisited and discussed, so that students are prepared for an upcoming lesson on exercise, as well as for the next part of the lesson on negative feedback control. Students will learn how this form of control reverses the original change and biological examples are used to emphasise the importance of this system for restoring levels to the limits (and the optimum). The remainder of the lesson explains how positive feedback differs from negative feedback as it increases the original change and the role of oxytocin in birth and the movement of sodium ions into a neurone are used to exemplify the action of this control system.
This fully-resourced lesson describes the roles of adrenaline in the fight or flight response. The engaging PowerPoint and accompanying resources have been designed to cover point 7.14 of the Edexcel International A-level Biology specification
At the start of the lesson, the students have to use the knowledge acquired in the most recent lessons on the function of the heart to reveal the key term medulla and this leads into the description of the structure of the adrenal glands in terms of this inner region.
The main part of the lesson focuses on the range of physiological responses of the organs to the release of adrenaline. Beginning with glycogenolysis, the need for adrenaline to bind to adrenergic receptors is described, including the activation of cyclic AMP. A quiz competition is used to introduce other responses including lipolysis, vasodilation, bronchodilation and an increase in stroke volume. Links to previous topics are made throughout the lesson and students are challenged on their knowledge of heart structure, triglycerides and polysaccharides.
This lesson describes the structure and functions of the adrenal glands, and includes the hormones secreted by the cortex and the medulla. The detailed PowerPoint and accompanying resources have been designed to cover point 5.1.4 (b) of the OCR A-level Biology A specification
This lesson has been planned to closely tie in with the previous lesson on endocrine communication, and specifically the modes of action of peptide and steroid hormones. At the start of the lesson, the students have to use the knowledge acquired in this last lesson to reveal the key term cortex and this leads into the description of the structure of the adrenal glands in terms of the outer region and the inner region known as the medulla.
The main part of the lesson focuses on the range of physiological responses of the organs to the release of adrenaline. Beginning with glycogenolysis, the need for adrenaline to bind to adrenergic receptors is described including the activation of cyclic AMP. A quiz competition is used to introduce other responses including lipolysis, vasodilation, bronchodilation and an increase in stroke volume. Links to previous topics are made throughout the lesson and students are challenged on their knowledge of heart structure and polysaccharides.
The final part of the lesson introduces the three zones of the adrenal cortex and the steroid hormones that they produce along with their functions. Once again, a series of exam-style questions are used to challenge their ability to apply their understanding to an unfamiliar situation and to make biological links and the mark schemes are embedded in the PowerPoint.
This fully-resourced lesson describes the major routes that pathogens take when entering the body and the body’s barriers to this infection. The engaging and detailed PowerPoint and accompanying resources have been designed to cover points 6.7 (i) & (ii) of the Edexcel International A-level Biology specification and includes descriptions of the following barriers:
skin
the blood clotting process
mucous membranes
stomach acid
vaginal acid and flora
skin and gut flora
wax in the ear canal
There are clear links to topics 1, 2 and 3 in each of these barriers, so these are considered and discussed during each of the descriptions. For example, the presence of keratin in the cytoplasm of the skin cells allows the student knowledge of the properties of this fibrous protein to be checked. Other topics that are revisited during this lesson include protein structure, key terminology and the epithelium that lines the different parts of the airways.
All of the exam-style questions have mark schemes that are embedded into the PowerPoint and a number of the tasks have been differentiated to allow students of differing abilities to access the work.
This fully-resourced lesson describes the role of barriers in protecting the body from infection by pathogens when entering the body by the major routes. The engaging and detailed PowerPoint and accompanying resources have been designed to cover points 6.11 (i) & (ii) of the Pearson Edexcel A-level Biology A (Salters Nuffield) specification and describe the following barriers:
skin
key steps of the blood clotting process
mucous membranes
stomach acid
vaginal and skin flora
There are clear links to topics 1, 2 and 3 in each of these barriers, so time is taken to consider these during the descriptions. For example, the presence of keratin in the cytoplasm of the skin cells allows the student knowledge of the properties of this fibrous protein to be checked. Other topics that are revisited during this lesson include blood clotting, protein structure, key terminology and the epithelium that lines the different parts of the airways.
All of the exam-style questions and tasks have mark schemes that are embedded in the PowerPoint and a number of them have been differentiated to allow students of differing abilities to access the work.
These 4 lessons cover the content of topic 5.2 of the AQA GCSE Biology specification - The human nervous system. Each of the lesson PowerPoints and their accompanying resources have been designed to contain a wide range of tasks which will engage and motivate the students whilst covering the GCSE content. There are also lots of understanding checks so students can check on their current understanding as well as prior knowledge checks where they are challenged to make links to previously-covered topics.
This bundle contains 12 lesson PowerPoints and their accompanying resources, and all of them have been planned at length to cover the GCSE content of topic 5 of the AQA GCSE Biology specification, whilst engaging and motivating the students with a wide range of tasks. These tasks include exam-style questions with answers included in the PowerPoint, guided discussion points and quick quiz rounds which are used to introduce key terms and values in a fun and memorable way whilst instilling some competition
The following Homeostasis and response specification points are covered by the lessons in this bundle:
Homeostasis*
Structure and function of the human nervous system
The brain
The eye
Control of body temperature
Human endocrine system
Control of blood glucose concentration
Maintaining water and nitrogen balance in the body*
Hormones in human reproduction
Contraception*
The use of hormones to treat infertility
Negative feedback
If you would like to sample the quality of lessons in this bundle, then download the lessons indicated with an asterisk as they have been uploaded for free
This lesson describes the importance of the cytoskeleton, and focuses on the role of these proteins in the transport within cells and cell movement. The PowerPoint and accompanying resource have been designed to cover point 2.1.1 (j) of the OCR A-level Biology A specification and has been specifically designed to tie in with
The previous lesson covered the ultrastructure of eukaryotic cells and the function of the different cellular components and this lesson has been planned to build on that knowledge to show how the cytoskeleton allows for the movement of these organelles from one part of the cell to another. In particular, the students will recognise how the dragging movement of the motor proteins along the microtubule track is important for the proteins produced at the RER to move to the Golgi before the vesicles are then moved to the membrane for exocytosis. In this way, this lesson also covers specification point 2.1.1 (i). Other examples such as the movement of the synaptic vesicles and the contraction of the spindle fibres during anaphase are used to consolidate understanding further. The cilia and the flagellum are also described and links are made to related topics such as the primary non-specific defences against pathogens.
In order to engage and motivate the students during the 7 lessons in this module, a running quiz competition has been written into each of the lessons and 3 rounds are incorporated into this lesson. A quiz scoresheet to keep track of the points is included in this resource.