A lot of time and effort has gone into the design of this revision resource as it covers the very important Atoms, elements and compounds topic (C3) of the CIE IGCSE Combined Specification which will be examined in June and November 2020 and 2021. This topic tends to contribute a high volume of the questions in the examination papers as it contains fundamental understanding. The resource contains a detailed and engaging PowerPoint (87 slides) and associated worksheets, which have been differentiated to allow differing abilities the chance to complete the task. The range of activities that include exam questions, quick tasks and quiz competitions aim to cover as much of the content as possible but the following topics have received particular attention: Metals vs non-metals Using the proton and nucleon number to calculate the number of sub-atomic particles Atoms vs ions Drawing dot and cross diagrams for ionic compounds The structure of an ionic compound and the relation to its properties Drawing dot and cross diagrams for simple molecules Understanding of the terms solution, solvent, solute and soluble Throughout the lesson, links have been made to other modules (e.g. Electricity and chemistry) so that students can see how they will be expected to make these connections. The detail of this lesson means that it can be used a number of times and is ideal for revision during the learning of C3, at the end of the topic or in the lead up to mocks or terminal exams.

This revision resource contains an engaging and informative PowerPoint (55 slides) and differentiated worksheets that will enable the students to assess their understanding of the topic C9 content of the CIE IGCSE Combined Science specification for examination in June and November 2020 and 2021. The range of exam questions (with explained answers), quick tasks and quiz competitions have been designed to cover as much content as possible but the following topics have received particular attention: • The properties of the alkali metals, halogens and noble gases • Explaining the reactivity of these groups in terms of electron configurations • The transition elements • The arrangement of the Periodic Table • Predicting properties of the undiscovered elements The question sheet about the properties of the different groups has been differentiated three ways so that a range of abilities can access the work

This revision resource has been designed to include a range of activities that will engage the students whilst they assess their understanding of the content of topic C12 of the CIE IGCSE Combined Science specification for examination in June and November 2020 and 2021. Exam questions, quick tasks and quiz competitions such as “Are you on FORM” will challenge the students on their recall of the content as well as their ability to apply this knowledge. The lesson was written to cover as much of the content as possible, but the following topics have received particular attention: • The conditions needed for cracking • Alkanes and alkenes as the products of cracking • Alkanes as saturated hydrocarbons with single covalent bonds between their atoms • Alkenes as unsaturated hydrocarbons with one double covalent bond • Testing between saturated and unsaturated hydrocarbons using aqueous bromine solution • The fractional distillation of crude oil • The uses of the fractions This resource contains an engaging PowerPoint (51 slides) and associated worksheets and is ideal for use at the end of this topic or in the lead up to mocks or the actual terminal exams

This revision resource contains an engaging PowerPoint (44 slides) and associated worksheets, all of which have been differentiated two ways to allow students of differing abilities to access the work. The range of activities cover the content of Topic C11 (Air and water) of the CIE IGCSE Combined Science specification, for examination in June and November 2020 and 2021. The aim was to cover as much of the content as possible but the following topics have received particular attention: The composition of clean air Changes in atmospheric carbon dioxide levels The formation of carbon dioxide Common air pollutants and their effects on health and structures The treatment of water to make it safe The chemical tests for water A number of quiz competitions are included in the lesson such as “POLLUTE the air…with the answer” where students compete to be the first to identify a common pollutant from the clues. These competitions act to engage them whilst the exam questions and quick tasks will enable them to assess their understanding of the content.

This revision resource has been designed to cover the content in both topic 11 (Gas exchange) and topic 12 (Respiration) of the CIE IGCSE Biology specification for examination in June and November 2020 and 2021. The topics have been combined because of the huge crossover and the aim was to encourage students to see those connections and to make the Biological links. The resource contains an engaging and detailed PowerPoint (77 slides) and associated worksheets, some of which have been differentiated to provide assistance for those students who need it. Included in the resource are exam questions, quick tasks and quiz competitions which try to cover as much content as possible with the following areas receiving particular attention: The internal and external structure of the trachea The structure of the alveoli to allow efficient gas exchange The role of the ribs, intercostal muscles and diaphragm in ventilation The differences in composition between inspired and expired air Aerobic respiration in seeds The uses of energy in the body of humans Anaerobic respiration and the oxygen debt This resource contains a large emphasis on the mathematical element of the Biology course. Students are guided through key skills such as percentage change and then challenged to apply

A considerable amount of time has been taken to design this revision resource so that the included activities engage the students whilst containing sufficient detail to enable them to assess their understanding of the content in topic 9 (Transport in animals) of the CIE IGCSE Biology specification. This resource can be used with those students taking both the 0610 and 0970 specifications and will be examined in June and November 2020 and 2021. This topic contains a lot of key details about the workings of the human body and is therefore likely to be heavily involved in the make up of upcoming examinations. The range of activities include exam questions with answers explained, differentiated tasks and quiz competitions such as “FOUND in the PLASMA” where students have to be the 1st to name the substances that are carried in this liquid and also “Is this passage on the right PATH” where students have to analyse a passage about the pathway of blood to determine if it is 100% correct. The lesson has been written to cover as much content from both the Core and Supplement sections as possible but the following have received particular attention: The functions of the different components of blood The structure of arteries and veins and how this is related to their functions The risk factors and treatments for CHD The structure of the heart and its associated blood vessels The function of the valves found in the heart and veins The double circulatory system

This revision resource includes exam questions, understanding checks and quiz competitions, all of which have been written to motivate and engage the students whilst they assess their understanding of the content found in topic 4 (Biological molecules) of the CIE IGCSE Biology specification for examination in June and November 2020 and 2021. This revision resource contains an engaging PowerPoint (36 slides) and associated worksheets. The range of activities have been designed to cover as much of the Core and Supplement content as possible but the following sub-topics have been given particular attention: List the chemical elements that make up carbohydrates State how starch, glycogen, cellulose, proteins and fats and oils are made from their specific smaller molecules Describe the use of the iodine and Benedicts solution test Explain how the specific sequence of the amino acids in a protein controls the shape and the effect this has on an enzyme and antibodies Describe the structure of DNA Recognise that water is an important solvent which is involved in a large number of roles in the human body In addition, links have been made to other topics such as hormones and organelles so that students can see the importance of making links between Biological topics

This revision resource includes exam questions, understanding checks and quiz competitions, all of which have been designed to motivate and engage the students whilst they assess their understanding of the content found in topic 2 (Experimental techniques) of the CIE IGCSE Chemistry specification for examination in June and November 2020 and 2021. This revision resource contains an engaging PowerPoint (50 slides) and associated worksheets, some of which have been differentiated to help and challenge differing abilities. The range of activities have been designed to cover as much of the Core and Supplement content as possible but the following sub-topics have been given particular attention: Identify substances and assess purity from melting and boiling point data Describe and explain the method of distillation Understand how fractional distillation separates mixtures according to their boiling points Describe and explain the method of crystallisation Demonstrate knowledge and understanding of paper chromatography Interpret simple chromatograms, including the calculation of the Rf values In addition, topics from other modules such as states of matter at different temperatures are covered so that students can see the importance of being able to make connections and links between Chemistry topics.

This revision resource includes exam questions, understanding checks and quiz competitions, all of which have been designed with the aim of motivating and engaging the students whilst they assess their understanding of the content found in topic 2 (Organisation of the organism) of the CIE IGCSE Biology specification for examination in June and November 2020 and 2021. This revision resource contains an engaging PowerPoint (53 slides) and an associated worksheet. The range of activities have been designed to cover as much of the Core and Supplement content as possible but the following sub-topics have been given particular attention: The function of the organelles found in animal and plant cells The features of specialised cells which allow them to perform their function The mitochondria and the production of energy for use in cell activities Calculating size and magnification by converting between millimetres and micrometres Tissues, organs and organ systems

This revision resource includes exam questions, understanding checks and quiz competitions, all of which have been designed with the aim of motivating and engaging the students whilst they assess their understanding of the content found in topic 10 (Diseases and immunity) of the CIE IGCSE Biology specification for examination in June and November 2020 and 2021. This revision resource contains an engaging PowerPoint (37 slides) and associated worksheets, some of which have been differentiated to help and challenge differing abilities. The range of activities have been designed to cover as much of the Core and Supplement content as possible but the following sub-topics have been given particular attention: Pathogens as disease causing microorganisms that cause transmissible diseases when they are spread Pathogens can be spread through direct or indirect contact Vaccinations as a form of active immunity that leads to the production of memory cells Examples of passive immunity The human body’s defence systems to include the white blood cells Diabetes type I as an example of an autoimmune disease

This revision resource includes exam questions, understanding checks and quiz competitions, all of which have been designed with the aim of motivating and engaging the students whilst they assess their understanding of the content found in topic 5 (Enzymes) of the CIE IGCSE Biology specification for examination in June and November 2020 and 2021. This revision resource contains an engaging PowerPoint (25 slides) and associated worksheet. The range of activities have been designed to cover as much of the Core and supplement content as possible but the following sub-topics have been given particular attention: Define enzymes as proteins that function as biological catalysts Explain enzyme action with reference to active site, substrate and enzyme-substrate complex Explain the specificity of enzymes Explain the effect of changes of temperature on enzyme activity Explain the effect of changes of pH on enzyme activity Describe what happens to an enzyme when it is denatured

This revision resource includes exam questions, understanding checks and quiz competitions, all of which have been designed with the aim of motivating and engaging the students whilst they assess their understanding of the content found in topic 3 (Movement in and out of cells) of the CIE IGCSE Biology specification for examination in June and November 2020 and 2021. This revision resource contains a detailed and engaging PowerPoint (42 slides) and associated worksheets, some of which have been differentiated to help and challenge differing abilities. The range of activities have been designed to cover as much of the Core and supplement content as possible but the following sub-topics have been given particular attention: Active transport as the movement of particles against their concentration gradient using energy from respiration The importance of active transport as demonstrated by the absorption of mineral ions by the root hair cells The movement of water across cell membranes by osmosis The importance of osmosis and water potential in the uptake of water by plants The effects on plant cells of immersion into solutions of different concentrations The importance of turgor pressure for a plant Diffusion as the net movement of particles with the concentration gradient Recognising the factors that influence the rate of diffusion In addition, topics from other modules such as specialised plant cells are covered so that students can see the importance of being able to make connections and links between Biological topics.

This revision resource has been filled with a range of activities that will motivate the students whilst they assess their understanding of the content found in module 4.2.1 (Biodiversity) of the OCR A-level Biology A specification. The content of this module is regularly assessed in the exams and therefore time has been taken to design the lesson to encourage recall. The resource includes a detailed and engaging Powerpoint (80 slides) and associated worksheets, some of which are differentiated to allow students of differing abilities to access the work. The range of activities have been designed to cover as much of the content as possible but the following sub-topics have been given particular attention: Considering biodiversity at different levels including species biodiversity Calculating the biodiversity of a habitat using the Simpsons index of diversity Assessing genetic diversity by looking at polymorphic gene loci Zoos as an ex situ method of maintaining biodiversity The factors affecting biodiversity There is a real emphasis on the mathematical element of the course in this lesson as students are challenged to apply the formulae in this module as well as more general skills such as percentage change. There are also links to topics from other modules such as selection pressures and codominance so students can experience the need to make connections between modules

This revision resource includes exam questions, understanding checks and quiz competitions, all of which have been designed with the aim of motivating and engaging the students whilst they assess their understanding of the content found in topic 1.1 (Cells and movement across cell membranes) of the WJEC GCSE Biology specification. The range of activities have been designed to cover as much of the content as possible but the following sub-topics have been given particular attention: Active transport as an active process The differentiation of cells in animal and plants to become adapted for specific functions Osmosis The functions of the organelles of animal and plant cells Enzymes as proteins which speed up reactions The active site, substrates and enzyme-substrate complexes The effect of pH on enzyme activity Diffusion as a passive process, which allows substances including oxygen and carbon dioxide to pass across a membrane

This revision resource includes exam questions, understanding checks and quiz competitions, all of which have been designed with the aim of motivating and engaging the students whilst they assess their understanding of the content found in topic 1.2 (Respiration and the respiratory system in humans) of the WJEC GCSE Biology specification. The range of activities have been designed to cover as much of the content as possible but the following sub-topics have been given particular attention: The need and purpose of the respiratory system The function of the mucus and cilia in the trachea and the effect of smoking on these structures The structure of the alveolus and its blood supply The mechanisms of inspiration and expiration The process of aerobic respiration and the release of energy in the form of ATP Anaerobic respiration and the production of lactic acid

The range of exam questions, understanding checks and quiz competitions that have been written into this revision lesson will help to motivate and engage the students whilst they assess their understanding of the content found in topic 1.3 (Digestion and the digestive system in humans) of the WJEC GCSE Biology specification. The resource includes a detailed and engaging Powerpoint (51 slides) and an associated worksheet, which has been differentiated to help differing abilities to access the work. The range of activities have been designed to cover as much of the content as possible but the following sub-topics have been given particular attention: The movement of food by peristalsis The role of carbohydrase, protease and lipase enzymes in digestion The tests for the presence of starch and glucose The roles of the stomach and small intestine in digestion The function of bile in the break down of fats The need for a balanced diet and implication for health of excess sugar and salt in foods

This revision resource has been designed to include a range of activities such as exam questions, understanding checks and quiz competitions which will motivate the students whilst they assess their understanding of the content found in topic 1.4 (Circulatory system in humans) of the WJEC GCSE Biology specification. The resource includes a detailed and engaging Powerpoint (58 slides) and associated worksheets, some of which have been differentiated to allow all abilities of students to access the work. The range of activities have been designed to cover as much of the content as possible but the following sub-topics have been given particular attention: The structure of a phagocyte and a red blood cell The functions of the plasma and the platelets The structure of arteries and veins and how this relates to their function The role of coronary arteries in supplying oxygenated blood to the heart cells The risk factors and treatments for cardiovascular diseases The structure of the heart and the pathway of blood through the double circulatory system