PowerPoint presentation and worksheet on the respiratory system 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. Leads on to Circulatory System: https://www.tes.com/teaching-resource/circulatory-system-slides-and-worksheet-gcse-biology-aqa-12340179 Content Covered: Thorax anatomy (lungs, diaphragm, bronchus, bronchioles, alveoli) Gas exchange in the body Calculating breathing rate Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Lungs lesson https://www.tes.com/teaching-resource/resource-12866802

PowerPoint presentation and worksheet on active transport 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 Transpiration and Translocation: https://www.tes.com/teaching-resource/resource-12342331 This task assumes that diffusion and osmosis have already been covered. Free resource available: https://www.tes.com/teaching-resource/diffusion-and-osmosis-with-worksheet-gcse-biology-aqa-12335213 Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Active transport lesson https://www.tes.com/teaching-resource/resource-12831984

PowerPoint presentation and worksheet on diffusion and osmosis for teaching and revision. Includes a visual guide to the required practical. 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. Leads on to Exchange Surfaces: https://www.tes.com/teaching-resource/exchanging-surfaces-slides-and-worksheet-gcse-biology-aqa-12332716 Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Diffusion and osmosis lesson https://www.tes.com/teaching-resource/resource-12831793

PowerPoint presentation and worksheet on exchanging substances in biology 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. Leads on to Active Transport: https://www.tes.com/teaching-resource/active-transport-slides-and-worksheet-gcse-biology-aqa-12335738 Content Covered: Surface area to volume ratio Gas exchange in the lungs Nutrient uptake in the small intestine Gas exchange in leaves Gas exchange in gills Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Exchanging substances lesson https://www.tes.com/teaching-resource/resource-12832416

PowerPoint presentation and worksheet on microscopy for teaching and revision. Simple step by step explanations of concepts up to the end of KS4. This resource covers the AQA Biology GCSE syllabus. There is a free accompanying resource covering the onion cell microscopy practical: https://www.tes.com/teaching-resource/microscopy-practical-onion-cells-12329755 Content Covered: Light microscopes Electron microscopes Resolution vs magnification Calculations Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Microscopy lesson https://www.tes.com/teaching-resource/resource-12829559

Presentation and practical handout for observing onion cells under a light microscope for teaching and revision. A step by step visual guide for all abilities. Can be used as a distance based learning tool during local covid lockdown and in classes where practicals are on-hold due to coronavirus. Can be used with Microscopy Slides and Worksheet: https://www.tes.com/teaching-resource/resource-12332237 Content covered: Light microscope parts Slide preparation Using a microscope Drawing and labeling observations Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Microscopy lesson https://www.tes.com/teaching-resource/resource-12829559

PowerPoint presentation and worksheet on binary fission of bacteria and other prokaryotic cells 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 Cell Organisation: https://www.tes.com/teaching-resource/resource-12321911 Content Covered: -Prokaryotic cell division -Mean division time calculations Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Binary fission lesson https://www.tes.com/teaching-resource/resource-12831346

PowerPoint presentation and worksheet on stem cells 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. Leads on to Microscopy: https://www.tes.com/teaching-resource/microscopy-slides-and-worksheet-gcse-biology-aqa-12332237 Content Covered: Embryonic and adult stem cells Plant stem cells Bioethics Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Stem cells lesson https://www.tes.com/teaching-resource/resource-12830214

PowerPoint presentation and worksheet on mitosis 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. Leads on to Binary Fission: https://www.tes.com/teaching-resource/binary-fission-slides-and-worksheet-gcse-biology-aqa-12318380 Content Covered: Chromosomes The cell cycle Mitosis Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Mitosis lesson: https://www.tes.com/teaching-resource/resource-12830872

PowerPoint presentation and worksheet on specialised cells 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. Leads on to Stem Cells: https://www.tes.com/teaching-resource/stem-cells-slides-and-worksheet-gcse-biology-aqa-12317132 Content Covered: Specialised cells Muscle, nerve and sperm cells Xylem, phloem, root hair and guard cells Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo New! Stem cells lesson https://www.tes.com/teaching-resource/resource-12829988

PowerPoint presentation and worksheet on plant cell organisation 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. Leads on to Transpiration and Translocation: https://www.tes.com/teaching-resource/transpiration-and-translocation-slides-and-worksheet-gcse-biology-aqa-12342331 Content Covered: Plant cell organisation Leaf tissues (epidermal, mesophyll, xylem and phloem) Meristems Plant cell structure Specialist plant cells Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo NEW: Plant cell organisation lesson https://www.tes.com/teaching-resource/resource-12863539 Plant cell organisation revision lesson https://www.tes.com/teaching-resource/resource-12903755 Photosynthesis lesson https://www.tes.com/teaching-resource/resource-12953622 Rate of photosynthesis lesson https://www.tes.com/teaching-resource/resource-12954106

PowerPoint presentation and worksheet on cell structure 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. Leads on to Specialised Cells https://www.tes.com/teaching-resource/specialised-cells-slides-and-worksheet-gcse-biology-aqa-12316142 New: Cell Structure GCSE Full Lesson https://www.tes.com/teaching-resource/resource-12829058 Content Covered: Eukaryotic and prokaryotic cells Subcellular structures Calculating the area of cells Suitable for remote online distance learning and usable by non-specialists, including for homeschooling. www.tes.com/teaching-resources/shop/Dr_Troilo