PowerPoint presentation and worksheet on xylem and phloem for A-Level biology for teaching and revision. Key points from GCSE are recapped in the presentation. Content Covered: Xylem and phloem Transpiration Cohesion-Tension theory Rate of transpiration Potometers Translocation Mass flow hypothesis Autoradiography Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

PowerPoint presentation on metabolism and homeostasis for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows the AQA Biology GCSE syllabus. Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Homeostasis lesson GCSE biology https://www.tes.com/teaching-resource/resource-12960089

PowerPoint presentation and worksheet on the work of the monk Gregor Mendel for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows the AQA Biology GCSE syllabus but is also applicable to other courses. Next topic Variation and Selective Breeding: https://www.tes.com/teaching-resource/resource-12547790 Content Covered: Overview of Mendel’s work First and second generation crosses Relating Mendel’s work to later discoveries -See also “Genetic Diagrams” https://www.tes.com/teaching-resource/resource-12974524 Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

PowerPoint presentation and worksheet on global warming for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. Content Covered: -What is global warming? -Sea levels rising -More frequent extreme weather -Loss of biodiversity -Changes in species distribution -Natural greenhouse effect -Climate change caused by human activity -Carbon dioxide and methane Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

PowerPoint presentation and worksheet on antibiotic resistance for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows on from Evolution (https://www.tes.com/teaching-resource/resource-12557498) Content Covered: -Emergence of resistant strains by mutation -Population growth of antibiotic resistant bacteria through natural selection -Misuse of antibiotics -Development of new antibiotics Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

PowerPoint presentation and worksheet on abiotic and biotic factors for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows on from Competition and Adaptation (https://www.tes.com/teaching-resource/-12635825) Content Covered: -Types of abiotic factors -Adaptation to abiotic factors -Effect of changes in abiotic factors -Effect of abiotic factors on plants -Changes in biotic factors and the effect on an ecosystem -Examples of cane toads and grey squirrels Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

PowerPoint presentation and worksheet on speciation for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows on from Evolution (https://www.tes.com/teaching-resource/resource-12557498) Content Covered: -Definition of a species -Isolated populations -Geographical isolation -The work of Alfred Russel Wallace Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

PowerPoint presentation and worksheet on environmental change for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows on from Food Chains and Trophic Levels (https://www.tes.com/teaching-resource/resource-12636420) Content Covered: -Meaning of distribution of organisms -Environmental changes causing distribution changes -Types of environmental changes -Examples of how temperature, soil composition, pollution and water availability can lead to distribution changes -Seasonal factors, geographic factors and human activity Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

PowerPoint presentation and worksheet on the water cycle for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. Content Covered: -Evaporation and transpiration -Condensation and cloud formation -Precipitation -Overview of the water cycle Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

PowerPoint presentation and worksheet on genetic for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows the AQA Biology GCSE syllabus but is also applicable to other courses. Next topic Inherited Disoders: https://www.tes.com/teaching-resource/resource-12405728 Content Covered: Alleles Homozygous and heterozygous Both types of genetic diagram covered in the course with practice questions and worked examples Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

Meiosis Slides and Worksheet (GCSE Biology AQA). PowerPoint presentation and worksheet on meiosis for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows the AQA Biology GCSE syllabus. Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

PowerPoint presentation and worksheet on X and Y chromosomes for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource follows the AQA Biology GCSE syllabus. Content covered: X chromosomes and Y chromosomes Meiosis and fertilisation Introduction to genetic diagrams using X and Y chromosomes as an example Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

Key stage 3 ~ year 7 ~ complete lesson on the menstrual cycle. In this lesson students will learn how to describe the menstrual cycle, explain what contraception is and give examples. Extension questions are included on the slides and there is a pick and mix of different tasks to select from for your students. This lesson includes: -Title slide with learning objectives -Starter task (recall from previous units) -Group reading task -Keywords task (vocabulary: periods, menstrual cycle, hormones, ovulation and contraception) -Order the steps of the menstrual cycle -Task boxes -Note copying task -All tasks, including the worksheet have an optional self-assessment slide. This presentation is fully editable. -Next lesson Flowers and Pollination https://www.tes.com/teaching-resource/resource-12656944 www.tes.com/teaching-resources/shop/Dr_Troilo

Key stage 3 ~ year 7 ~ complete lesson on adolescence. In this lesson students will learn how to explain the difference between adolescence and puberty and to identify physical changes which happen in male and female bodies. Extension questions are included on the slides and there is a pick and mix of different tasks to select from for your students. This lesson includes: -Title slide with learning objectives -Starter task (recall from previous units) -Group reading task -Keywords task (vocabulary: adolescence, puberty, hormones, ovaries and testes) -Task boxes -True or False task -Sorting task -All tasks, including the worksheet have an optional self-assessment slide. This presentation is fully editable. -Next lesson Reproductive Systems https://www.tes.com/teaching-resource/resource-12656038 www.tes.com/teaching-resources/shop/Dr_Troilo

Key stage 3 ~ year 7 ~ complete lesson on the development of a fetus. In this lesson students will learn how to describe the structures found in the uterus during pregnancy and explain what happens during gestation and birth. Extension questions are included on the slides and there is a pick and mix of different tasks to select from for your students. This lesson includes: -Title slide with learning objectives -Starter task (recall from previous units) -Group reading task -Keywords task (vocabulary: reproduction, egg cell, sperm cell and urethra) -Handout sheet task -Task boxes -Putting the stages of labour into order -Recall questions for the unit so far -All tasks, including the worksheet have an optional self-assessment slide. This presentation is fully editable. -Next lesson The Menstrual Cycle https://www.tes.com/teaching-resource/-12977268 www.tes.com/teaching-resources/shop/Dr_Troilo

Key stage 3 ~ year 7 ~ complete lesson on observing cells using a light microscope. In this lesson students will learn how to describe what a cell is, explain how to use a microscope to look at cells and calculate the total magnification of a microscope. These slides can be used as a stand-alone or incorporated into a practical lesson. Extension questions are included on the slides and there is a pick and mix of different tasks to select from for your students. This lesson includes: Title slide with learning objectives Starter task (pair and share) Group reading task (literacy) Keywords activity (Vocabulary: cell, observation, organism, microscope and magnification) Task boxes Handout sheet task Ordering the steps of using a m icroscope task Numeracy task All tasks, including the worksheet have an optional self-assessment slide. This presentation is fully editable. Onion cells practical slides and handout sheet are included. Leads to Plant and Animal Cells (https://www.tes.com/teaching-resource/resource-12650214) www.tes.com/teaching-resources/shop/Dr_Troilo

Key stage 3 ~ year 7 ~ complete lesson on levels of organisation. Extension questions are included on the slides and there is a pick and mix of different tasks to select from for your students. This lesson includes: -Title slide with learning objectives -Starter task (recall from previous topic) -Group reading task (literacy) -Keywords activity -Task boxes -Handout sheet task -Sorting task -Recall questions linking this topic to previous learning Next lesson Gas Exchange https://www.tes.com/teaching-resource/resource-12652335 All tasks, including the worksheet have an optional self-assessment slide. This presentation is fully editable. www.tes.com/teaching-resources/shop/Dr_Troilo

PowerPoint presentation and worksheet on the carbon cycle for GCSE biology for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. Content Covered: -Forms of carbon in living organisms -Recap of photosynthesis -Carbon movement through the food chain -Carbon release by respiration -Carbon release by decomposers -Carbon release by combustion -Overview of the carbon cycle -Guide to identifying processes in carbon cycle diagrams Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo

Key stage 3 ~ year 7 ~ complete lesson on the particle model. In this lesson students will learn how to use the particle model to explain why different materials have different properties. These slides can be used as a stand-alone or incorporated into a practical lesson. Extension questions are included on the slides and there is a pick and mix of different tasks to select from for your students. This lesson includes: -Title slide with learning objectives -A starter activity -A group reading task (literacy) -Keywords sorting task (vocabulary: material, particle, substance, mixtures and properties) -Task boxes -A numeracy development task -A slide for taking notes on the three factors which give materials their properties -Answer slides included -Next Lesson States of Matter (https://www.tes.com/teaching-resource/resource-12660766) www.tes.com/teaching-resources/shop/Dr_Troilo

Key stage 3 ~ year 7 ~ complete lesson on boiling and condensing. In this lesson students will learn how to describe in detail how substances boil and condense and to explain how we can use melting and boiling points to identify substances and check whether they are pure. Extension questions are included on the slides and there is a pick and mix of different tasks to select from for your students. This lesson includes: -Title slide with learning objectives -A starter activity -A group reading task (literacy) -Keywords sorting task (vocabulary: distillation, pure substance, mass, conserved and force) -A task box exercise -A numeracy task to practice data interpretation and determining states of matter from melting and boiling points -A true or false recap activity -Answer slides included -Next lesson Evaporation and Sublimation https://www.tes.com/teaching-resource/resource-12675915 www.tes.com/teaching-resources/shop/Dr_Troilo