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 detailed lesson looks at each of the stages of aerobic respiration and explains how this reaction is a multi-stepped process where each step is controlled by an enzyme. The engaging PowerPoint and accompanying resource have been designed to cover points 7.3 (i) and (ii) of the Pearson Edexcel A-level Biology A (Salters Nuffield) specification.
The lesson begins with an introduction to glycolysis and students will learn how this first stage of aerobic respiration is also the first stage when oxygen is not present. This stage involves 10 reactions and an opportunity is taken to explain how each of these reactions is catalysed by a different, specific intracellular enzyme. A version of “GUESS WHO” challenges students to use a series of structural clues to whittle the 6 organelles down to just the mitochondrion so that they can learn how the other three stages take place inside this organelle. Moving forwards, the key components of the organelle are identified on a diagram. Students are introduced to the stages of respiration so that they can make a link to the parts of the cell and the mitochondria where each stage occurs. Students will learn that the presence of decarboxylase and dehydrogenase enzymes in the matrix along with coenzymes and oxaloacetate allows the link reaction and the Krebs cycle to run and that these stages produce the waste product of carbon dioxide. Finally, time is taken to introduce the electron transport chain and the enzyme, ATP synthase, so that students can begin to understand how the flow of protons across the inner membrane results in the production of ATP and the atmospheric oxygen being reunited with hydrogen.
This engaging lesson looks at the role of haemoglobin in carrying oxygen and carbon dioxide. The PowerPoint has been designed to cover point 8.1 (f) of the CIE International A-level Biology specification and includes references to the role of carbonic anhydrase and the formation of haemoglobinic acid and carbaminohaemoglobin.
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. The remainder of the lesson looks at the different ways that carbon dioxide is transported around the body that involve haemoglobin. Time is taken to look at the dissociation of carbonic acid into hydrogen ions so that students can understand how this will affect the affinity of haemoglobin for oxygen in an upcoming lesson on the Bohr effect.
This engaging and fully-resourced lesson looks at the effects of stabilising, directional and disruptive selection as the three main types of selection. The PowerPoint and accompanying resources have been designed to cover point 17.2 (b) of the CIE International A-level Biology specification which states that students should be able to identify each type of selection by its effect on different phenotypes.
The lesson begins with an introduction to the mark, release, recapture method to calculate numbers of rabbits with different coloured fur in a particular habitat. This method is covered later in topic 18 so this section of the lesson is designed purely to generate changes in numbers of the organisms. Sketch graphs are then constructed to show the changes in the population size in this example. A quick quiz competition is used to engage the students whilst introducing the names of the three main types of selection before a class discussion point encourages the students to recognise which specific type of selection is represented by the rabbits. Key terminology including intermediate and extreme phenotypes and selection pressure are used to emphasise their importance during explanations. A change in the environment of the habitat and a change in the numbers of the rabbits introduces directional selection before students will be given time to discuss and to predict the shape of the sketch graph for disruptive selection. Students are challenged to apply their knowledge in the final task of the lesson by choosing the correct type of selection when presented with details of a population and answer related questions.
This detailed lesson explains how the process of transcription results in the production of messenger RNA (mRNA). Both the detailed PowerPoint and accompanying resource have been designed to specifically cover the first part of point 6.2 (d) of the CIE International A-level Biology specification.
The lesson begins by challenging the students to recall that most of the nuclear DNA in eukaryotes does not code for polypeptides. This allows the promoter region and terminator region to be introduced, along with the structural gene. Through the use of an engaging quiz competition, students will learn that the strand of DNA involved in transcription is known as the template strand and the other strand is the coding strand. Links to previous lessons on DNA and RNA structure are made throughout and students are continuously challenged on their prior knowledge as well as they current understanding of the lesson topic. Moving forwards, the actual process of transcription is covered in a 7 step bullet point description where the students are asked to complete each passage using the information previously provided. An exam-style question is used to check on their understanding before the final task of the lesson looks at the journey of mRNA to the ribosome for the next stage of translation.
This lesson has been written to challenge all abilities whilst ensuring that the most important details are fully explained.
This bundle of 6 revision lessons challenges the students on their knowledge of the content of topics B1 - B7, C1 - C10 and P1 - P7 of the AQA GCSE Combined Science specification which will be assessed on the 6 terminal GCSE papers. Specifically, the range of tasks which include exam-style questions (with displayed answers), quiz competitions and discussion points, have been designed for students taking the FOUNDATION TIER papers but could also be used with students taking the higher tier who need to ensure that the key points are embedded on some topics.
The majority of the tasks are differentiated 2 or 3 ways so that a range of abilities can access the work whilst remaining challenged by the content.
If you would like to see the quality of these lessons, download the paper 2 and 5 revision lessons as these have been shared for free.
This is a fully-resourced revision lesson that has been written to challenge students on their knowledge and understanding of the PAPER 2 topics. The range of tasks will prepare the students to answer the range of questions that they may encounter on topics B1 and B6 - B9 as detailed in the Pearson Edexcel GCSE Combined Science specification.
The lesson has been designed to take place on the PAPER 2 HIGH STREET and the tasks include exam-style questions with displayed mark schemes, engaging quiz competitions and discussion points to allow the following points to be covered:
Eukaryotic vs Prokaryotic cells
Converting between units of size
The structures of the animal and plant cells
The structure of the human heart
Calculating the surface area to volume ratio
Adaptations of the gas exchange system
The blood vessels associated with the human heart
Calculating the cardiac output
The features of the root hair cell to allow for absorption
The nitrogen cycle
The relationship between the rate of photosynthesis and light intensity and distance
Using the inverse square law calculation
Temperature and photosynthesis
The regulation of blood glucose by the release of insulin and glucagon
Diabetes type I and II
Calculating the BMI
The interaction of the reproductive hormones in the menstrual cycle
IVF as assisted reproductive technology
The hormonal and barrier methods of contraception
Eutrophication as a negative human interaction in an ecosystem
The carbon cycle
In order to cater for the range of abilities that can be found in Combined Science classes, most of the tasks have been differentiated. There are also a number of step by step guides to demonstrate how to tackle some of the more difficult concepts including the mathemetical elements
If you would like to see the quality of these revision lessons, download the PAPER 1 REVISION LESSON which has been shared for free
Disaccharides are formed from the condensation of two monosaccharides and this lesson describes the formation of maltose, sucrose and lactose. The PowerPoint and accompanying question sheet have been designed to cover the second part of point 1.2 of the AQA A-level Biology specification but also make links to the previous lesson on monosaccharides when considering the different components of these three disaccharides.
The first section of the lesson focuses on a prefix and a suffix so that the students can recognise that the names of the common disaccharides end in -ose. In line with this, a quick quiz round is used to introduce maltose, sucrose and lactose before students are challenged on their prior knowledge as they have to describe how condensation reactions and the formation of glycosidic bonds were involved in the synthesis of each one. The main task of the lesson again challenges the students to recall details of a previous lesson as they have to identify the monomers of each disaccharide when presented with the displayed formula. Time is taken to show how their knowledge of these simple sugars will be important in later topics such as digestion, translocation in the phloem and the Lac Operon in the control of gene expression. The lesson finishes with two exam-style questions where students have to demonstrate and apply their newly acquired knowledge
This detailed lesson describes the structure of a nucleotide including the structure of the phosphorylated nucleotide, ATP. The engaging PowerPoint has been designed to cover point (a) of topic 6.1 as detailed in the CIE International A-level Biology specification and links are made throughout to earlier topics such as biological molecules as well as to upcoming topics like DNA structure and replication.
Students were introduced to the term monomer and nucleotide in topic 2, so the start of the lesson challenges them to recognise this latter term when only the letters U, C and T are shown. This has been designed to initiate conversations about why only these letters were used so that the nitrogenous bases can be discussed later in greater detail. Moving forwards, students will learn that a nucleotide is the monomer to a polynucleotide and that deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) are two examples of this type of polymer. The main part of the lesson has been filled with various tasks that explore the structural similarities and structural differences between DNA and RNA. This begins by describing the structure of a nucleotide as a phosphate group, a pentose sugar and a nitrogenous base. Time is taken to consider the details of each of these three components which includes the role of the phosphate group in the formation of a phosphodiester bond between adjacent nucleotides on the strand. At this point students are challenged on their understanding of condensation reactions and have to identify how the hydroxyl group associated with carbon 3 is involved along with the hydroxyl group of the phosphoric acid molecule. A number of quiz rounds are used during this lesson, as a way to introduce key terms in a fun and memorable way. One of these rounds introduces adenine and guanine as the purine bases and thymine, cytosine and uracil as the pyrimidine bases and the students are shown that their differing ring structures can be used to distinguish between them. The remainder of the lesson focuses on ATP as a phosphorylated nucleotide and links are made to the hydrolysis of this molecule for energy driven reactions in cells such as active transport
Adenosine triphosphate is the universal energy currency and this lesson focuses on the structure of this nucleotide derivative. The PowerPoint has been designed to cover point 1.6 of the AQA A-level Biology specification and also explains how ATP must be hydrolysed to release energy and then re-synthesised during respiration and photosynthesis.
As the previous sub-topic concerned the structure of DNA and RNA, the start of this lesson challenges the students on their knowledge of these polynucleotides so that they can recognise that this molecule consists of adenine, ribose and three phosphate groups. In order to release the stored energy, ATP must be broken down and students will be given time to discuss which reaction will be involved as well as the products of this reaction. Time is taken to describe how the hydrolysis of ATP can be coupled to energy-requiring reactions within cells and the examples of active transport and skeletal muscle contraction are used as these are covered in greater detail in topic 2 and 6. The final part of the lesson considers how ATP must be re-synthesised and students will learn that this occurs in the mitochondria and chloroplast during aerobic respiration and photosynthesis respectively.
This fully-resourced lesson describes how triglycerides are formed during condensation reactions and compares saturated and unsaturated lipids. The engaging PowerPoint and accompanying worksheets have been designed to cover the points 1.14 (i) & (ii) of the Pearson Edexcel A-level Biology A specification and links are also made to related future topics such as the importance of the myelin sheath for the conduction of an electrical impulse.
The lesson begins with a focus on the basic structure and roles of lipids, including the elements that are found in this biological molecule and some of the places in living organisms where they are found. Moving forwards, the students are challenged to recall the structure of the carbohydrates from topics 1.12 & 1.13 so that the structure of a triglyceride can be introduced. Students will learn that this macromolecule is formed from one glycerol molecule and three fatty acids and have to use their understanding of condensation reactions to draw the final structure. Time is taken to look at the difference in structure and properties of saturated and unsaturated fatty acids and students will be able to identify one from the other when presented with a molecular formula. The final part of the lesson explores how the various properties of a triglyceride mean that it has numerous roles in organisms including that of an energy store and source and as an insulator of heat and electricity.
This lesson introduces the concept of monomers and polymers and emphasises the importance of condensation and hydrolysis reactions for biological molecules. The PowerPoint and accompanying worksheet have been designed to cover specification point 2.1.2 (b) of the OCR A-level Biology A course, and as this is likely to be one of the very first lessons that the students encounter, the range of engaging tasks have been specifically designed to increase the likelihood of the key points and fundamentals being retained.
Monomers were previously met at GCSE and so the beginning of the lesson focuses on the recall of the meaning of this key term before the first in a series of quiz rounds is used to introduce nucleotides, amino acids and monosaccharides as a few of the examples that will be met in this topic. Dipeptides and disaccharides are introduced as structures containing 2 amino acids or sugars respectively and this is used to initiate a discussion about how monomers need to be linked together even more times to make the larger chains known as polymers. At this point in the lesson, the students are challenged to recall the definition of a condensation reaction from the previous lesson on water and are then challenged to identify where the molecule of water is eliminated from when two molecules of glucose join. A series of important prefixes and suffixes are then provided and students use these to remind themselves of the details of a hydrolysis reaction.
Links to upcoming lessons are made throughout the PowerPoint to encourage students to begin to recognise the importance of making connections between topics.
This lesson describes how disaccharides like maltose, sucrose and lactose are formed from the condensation of two monosaccharides and can also be broken down by hydrolysis reactions. The PowerPoint and accompanying question sheet have been designed to cover specification point 2.1.2 (e) of the OCR A-level Biology A specification but also makes repeated links to the previous lesson on monosaccharides when considering the different components of these three disaccharides.
The first section of the lesson focuses on a prefix and a suffix so that the students can recognise that the names of the common disaccharides end in -ose. In line with this, a quick quiz round is used to introduce maltose, sucrose and lactose before students are challenged on their prior knowledge as they have to describe how condensation reactions and the formation of glycosidic bonds were involved in the synthesis of each one. The main task of the lesson again challenges the students to recall details of a previous lesson as they have to identify the monomers of each disaccharide when presented with the displayed formula. Time is taken to show how their knowledge of these simple sugars will be important in later topics such as extracellular enzymes, translocation in the phloem and the Lac Operon in cellular control. The lesson finishes with two exam-style questions where students have to demonstrate and apply their newly acquired knowledge when presented with unfamiliar disaccharides
This detailed lesson describes the different levels of protein structure and focuses on the bonds that hold these molecules in shape. Both the engaging PowerPoint and accompanying resources have been designed to cover specification point 2.3 (b) of the CIE International A-level Biology course and makes continual links to previous lessons such as amino acids & peptide bonds as well as to upcoming lessons like enzymes and antibodies.
The start of the lesson focuses on the formation of a peptide bond during a condensation reaction so that students can understand how a dipeptide is formed and therefore how a polypeptide forms when multiple reactions occur.
The main part of the lesson describes the different levels of protein structure. A step by step guide is used to demonstrate how the sequences of bases in a gene acts as a template to form a sequence of codons on a mRNA strand and how this is translated into a particular sequence of amino acids known as the primary structure. The students are then challenged to apply their understanding of this process by using three more gene sequences to work out three primary structures and recognise how different genes lead to different sequences. Moving forwards, students will learn how the order of amino acids in the primary structure determines the shape of the protein molecule, through its secondary, tertiary and quaternary structure and time is taken to consider the details of each of these. There is a particular focus on the different bonds that hold the 3D shape firmly in place and a quick quiz round then introduces the importance of this shape as exemplified by enzymes, antibodies and hormones. Students will see the differences between globular and fibrous protein and again biological examples are used to increase relevance. The lesson concludes with one final quiz round called STRUC by NUMBERS where the students have to use their understanding of the protein structures to calculate a numerical answer.
This lesson describes how the relationship between the different properties of water and its roles in living organisms. The engaging PowerPoint has been designed to cover specification point 2.3 (d) of the CIE International A-level Biology course.
Hydrolysis reactions have been a recurring theme throughout topic 2, so the start of this lesson challenges the students to recognise the definition when only a single word is shown: water. Students will also recall the meaning of a condensation reaction. Moving forwards, the rest of the lesson focuses on the relationship between the structure and properties of water, beginning with its role as an important solvent. The lesson has been specifically written to make links to future topics and this is exemplified by the transport of water along the xylem in plants which is covered in topic 7. The next section focuses on the high latent heat of vaporisation and heat capacity of water and these properties are put into biological context using thermoregulation and the maintenance of a stable environment for aquatic animals. The lesson finishes with an explanation of the polar nature of water, a particularly important property that needs to be well understood for a number of upcoming topics, such as cell membranes.
This bundle contains 5 detailed and engaging lessons that cover the content in topic 2.2 of the CIE International A-level Biology course. Due to the importance of these biological molecules in living organisms, this mini-topic is fundamental to the whole course and planning has taken account of this with extra time given to those key details which must be understood.
The PowerPoints and accompanying resources contain a wide range of activities which include discussion points, current understanding and prior knowledge checks and quiz competitions.
The following specification points are covered in this bundle:
The ring forms of alpha and beta glucose
The meaning of the terms monomer, polymer, macromolecule, monosaccharide, disaccharide and polysaccharide
The formation and breakage of glycosidic bonds by condensation and hydrolysis reactions
The molecular structure of a triglyceride
The relationship between the structure and functions of triglycerides in living organisms
The structure and functions of phospholipids
If you would like to sample the quality of the lessons, download the glucose and phospholipids lessons as these have been shared for free
This lesson describes the structure and mode of action of phagocytes and focuses on the neutrophils and macrophages as APCs. The engaging and detailed PowerPoint and accompanying resources have been designed to cover point 4.1.1 (e) [i] of the OCR A-level Biology A specification and also includes an introduction to antigen-presentation so that the students are prepared for the next lesson on the specific immune response
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 lesson concludes with a brief introduction to lymphocytes so that initial links between phagocytosis and the specific immune response is made.
This fully-resourced lesson guides students through the use of the Hardy-Weinberg equation to monitor changes in allele frequencies in a population. The detailed PowerPoint and differentiated practice questions worksheets have been designed to cover point 8.3 (iv) of the Edexcel A-level Biology B specification
The lesson begins with a focus on the equation to ensure that the students understand the meaning of each of the terms. The recessive condition, cystic fibrosis, is used as an example so that students can start to apply their knowledge and assess whether they understand which genotypes go with which term. Moving forwards, a step-by-step guide is used to show students how to answer a question. Tips are given during the guide so that common misconceptions and mistakes are addressed immediately. The rest of the lesson gives students the opportunity to apply their knowledge to a set of 3 questions, which have been differentiated so that all abilities are able to access the work and be challenged
This fully-resourced lesson describes how natural selection results in species with anatomical, behavioural and physiological adaptations. The engaging and detailed PowerPoint and accompanying resources have been designed to cover the fourth part of point 4.4 of the AQA A-level Biology specification and make continual links to the earlier parts of this topic including evolution and genetics.
A quick quiz competition at the start of the lesson introduces the different types of adaptation and a series of tasks are used to ensure that the students can distinguish between anatomical, behavioural and physiological adaptations. The Marram grass is used to test their understanding further, before a step by step guide describes how the lignified cells prevent a loss of turgidity. Moving forwards, the students are challenged to explain how the other adaptations of this grass help it to survive in its environment. A series of exam-style questions on the Mangrove family will challenge them to make links to other topics such as osmosis and the mark schemes are displayed to allow them to assess their understanding. The final part of the lesson focuses on the adaptations of the anteater but this time links are made to the upcoming topic of taxonomy so that students are prepared for this lesson on species and classification hierarchy.
This fully-resourced lesson describes genetic diversity as the number of genes in a population and explains how this is increased by polymorphic gene loci. The engaging PowerPoint and accompanying differentiated resources have been primarily designed to cover the first part of point 4.4 of the AQA A-level Biology specification but also introduces inheritance and codominance so that students are prepared for these sub-topics when covering topic 7 in the following year.
In order to understand that 2 or more alleles can be found at a gene loci, students need to be confident with genetic terminology, so the start of the lesson focuses on key terms including gene, locus, allele, recessive, genotype and phenotype. A number of these will have been met at GCSE, as well as during the earlier lessons in topic 4 when considering meiosis, so a quick quiz competition is used to check on their recall of the meanings of these terms. The CFTR gene is then used as an example to demonstrate how 2 alleles results in 2 different phenotypes and therefore genetic diversity. Moving forwards, students will discover that more than 2 alleles can be found at a locus and they are challenged to work out genotypes and phenotypes for a loci with 3 alleles (shell colour in snails) and 4 alleles (coat colour in rabbits). At this point, the students are introduced to codominance and again they are challenged to apply their understanding to a new situation by working out the number of phenotypes in the inheritance of blood groups. The lesson concludes with a brief consideration of the HLA gene loci, which is the most polymorphic loci in the human genome, and students are challenged to consider how this sheer number of alleles can affect the chances of tissue matches in organ transplantation.
