Science — Year 3 to GCSE

88 lessons, each with practice questions, a printable worksheet and an end-of-chapter test. Free to browse.

• Enzymes Years 9–11 · Enzymes are biological catalysts whose specific active-site shape speeds up reactions…
• Transport in Plants Years 8–11 · Xylem carries water and minerals up while phloem transports sugars, with transpiration…
• Gas Exchange & Breathing Years 8–11 · The breathing system moves air to the alveoli, where gases are exchanged across a large,…
• Excretion & the Kidney Years 9–11 · The kidneys filter the blood in nephrons, reabsorbing useful substances and removing…
• Coordination & Homeostasis Years 10–11 · Homeostasis keeps internal conditions stable through negative feedback, illustrated by…
• Reproduction Years 8–11 · Reproduction can be asexual or sexual, covering flowering-plant fertilisation and the…
• The Mole & Stoichiometry Years 10–11 · Counting particles by weighing — using the mole to link masses, gas volumes,…
• Electrolysis Years 10–11 · Splitting ionic compounds with electricity — electrodes, the aqueous rules,…
• Acids, Bases, Salts & Titration Years 9–11 · How acids behave, how to make soluble and insoluble salts, and how titration finds an…
• Chemical Analysis & Testing Years 9–11 · How chemists identify substances — purity by melting point, chromatography with Rf,…
• Moments & Turning Effect Years 9–11 · How forces make things turn, the principle of moments, and why the centre of gravity…
• Thermal Physics Years 10–11 · Specific heat capacity and latent heat with real calculations, plus how heat travels by…
• Momentum Years 10–11 · Momentum p = mv, its conservation in collisions, impulse as Ft, and how these ideas make…
• Electromagnetic Induction, Generators & Transformers Years 10–11 · How moving magnets induce voltage, how a.c. generators work, and how transformers change…
• Radioactivity — Half-life & Decay Years 10–11 · Alpha, beta and gamma radiation, nuclear decay equations, half-life calculations, uses…
• Cells Years 6–11 · The building blocks of life — animal and plant cells and what's inside them.
• Atoms, Elements & Compounds Years 7–11 · What everything is made of — atoms, and how they build elements, compounds and mixtures.
• Forces Years 6–11 · Pushes and pulls — contact and non-contact forces, resultant force and F = ma.
• Cell Transport Years 8–11 · How substances move in and out of cells — diffusion, osmosis and active transport.
• The Periodic Table Years 7–11 · How the elements are organised — periods, groups, metals and the key groups to know.
• Motion Years 7–11 · Speed, velocity and acceleration — and reading distance–time graphs.
• Cell Division Years 9–11 · How cells copy themselves by mitosis — for growth and repair — plus stem cells.
• Organisation & Digestion Years 7–11 · From cells to organ systems — and how enzymes digest your food.
• States of Matter Years 6–11 · Solids, liquids and gases explained by the particle model, and changes of state.
• Atomic Structure Years 8–11 · Protons, neutrons and electrons — and working out atomic and mass numbers.
• Energy Years 7–11 · Energy stores and transfers, and the law of conservation of energy.
• Electricity Years 6–11 · Current, voltage and resistance in circuits — and the equation V = I × R.
• The Circulatory System Years 7–11 · How the heart and blood vessels move blood, oxygen and food around the body.
• Photosynthesis Years 6–11 · How plants make their own food from light, carbon dioxide and water.
• Chemical Bonding Years 9–11 · Why atoms bond — ionic, covalent and metallic bonding explained.
• Chemical Reactions & Equations Years 7–11 · Reactants and products, the signs of a reaction, and conservation of mass.
• Waves Years 8–11 · Transverse and longitudinal waves, their features, and wave speed = f × λ.
• Light & Sound Years 6–11 · How light and sound waves differ — reflection, speed, and needing a medium.
• Respiration Years 7–11 · How every cell releases energy from glucose — aerobic and anaerobic respiration.
• Health & Disease Years 7–11 · Pathogens, how disease spreads, and how the body defends itself.
• Acids & Bases Years 7–11 · The pH scale, indicators, and neutralisation reactions.
• Rates of Reaction Years 9–11 · What makes reactions faster or slower — collision theory and the key factors.
• Magnetism & Electromagnetism Years 8–11 · Magnetic poles and fields, and how an electric current makes a magnet.
• The Particle Model & Density Years 7–11 · Using the particle model to explain density — mass ÷ volume — and floating.
• Nervous System & Hormones Years 9–11 · How your body senses and responds — fast nerves, slower hormones, and homeostasis.
• Ecology Years 6–11 · Ecosystems and food chains — how energy flows from producers to consumers.
• Energy Changes Years 10–11 · Exothermic and endothermic reactions — reactions that heat up or cool down.
• Reactivity & Metals Years 8–11 · The reactivity series, displacement reactions, and metals with acids.
• Radioactivity Years 10–11 · Unstable nuclei, the three types of radiation, and half-life.
• Pressure Years 8–11 · Pressure = force ÷ area, and why area matters for cutting, pins and snowshoes.
• Inheritance & DNA Years 9–11 · How characteristics pass from parents to offspring — genes, alleles and Punnett squares.
• Evolution Years 6–11 · Darwin's theory of evolution by natural selection — and the evidence for it.
• Organic Chemistry Years 10–11 · The chemistry of carbon — crude oil, hydrocarbons and burning fuels.
• Earth & Atmosphere Years 8–11 · What the air is made of, and the greenhouse effect and climate change.
• Work & Power Years 10–11 · Work done = force × distance, and power = work ÷ time.
• Space Years 6–11 · The Solar System, stars, and the gravity that holds it all together.
• Variables & Fair Testing Years 6–9 · Independent, dependent and control variables, writing a testable hypothesis, and what…
• Measurement, Uncertainty & Evaluating Results Years 6–11 · Choosing apparatus, repeating measurements to find a reliable mean, spotting anomalous…
• The Engineering Design Process Years 6–9 · Defining a problem, identifying criteria and constraints, generating multiple designs,…
• The Rock Cycle & Earth's Structure Years 7–10 · Earth's layered structure in brief, the three rock types — igneous, sedimentary and…
• Plate Tectonics: The Science Years 8–11 · The theory of plate tectonics — plates moving on the mantle, driven by convection…
• What Is Psychology? Years 8–11 · Psychology is the scientific study of the mind and behaviour, explored through several…
• The Brain & Nervous System Years 8–11 · The brain and nervous system use neurons to carry signals that control our thoughts,…
• Memory Years 8–11 · Memory works by encoding, storing and retrieving information, and it can be strengthened…
• Perception Years 9–11 · Perception is how the brain actively interprets sensory information to make sense of the…
• Learning & Conditioning Years 9–11 · How people and animals learn new behaviours through association, reward and consequence,…
• Emotion & Mental Wellbeing Years 8–11 · What emotions are, how stress and anxiety work, and healthy, hopeful ways to look after…
• The Self, Personality & the Nafs Years 10–11 · How psychologists describe personality and identity, alongside the Islamic model of the…
• Human Development Years 9–11 · How people grow and change from childhood to adulthood, and how nature and nurture shape…
• Social Psychology Years 9–11 · How other people influence the way we think and behave, from conformity and obedience to…
• Research Methods in Psychology Years 10–11 · How psychologists study behaviour scientifically using experiments, observations,…
• The Night Sky & Stars Years 7–11 · Discover what stars are, how we group them into constellations, and how people have used…
• The Sun Years 7–11 · Learn how the Sun, our nearest star, makes its own light and heat by nuclear fusion and…
• The Moon & Its Phases Years 7–11 · Understand how the Moon reflects sunlight, why it shows eight changing phases, and how…
• Day, Night & the Seasons Years 7–11 · Earth spins on a tilted axis to give us day and night, and its yearly orbit of the Sun…
• The Solar System Years 7–11 · Our Solar System is the Sun with eight orbiting planets, held together by gravity, along…
• Eclipses Years 7–11 · An eclipse happens when the Sun, Earth and Moon line up, casting a shadow that briefly…
• Stars, Galaxies & the Universe Years 10–11 · How stars are born, live and die, how they gather into galaxies, and how astronomers…
• The Origin of the Universe Years 10–11 · The Big Bang theory says the universe began about 13.8 billion years ago from a hot,…
• The Golden Age of Muslim Astronomy Years 7–11 · During the Islamic Golden Age, Muslim astronomers built observatories, mapped the stars…
• The Heavens as Signs (Āyāt) Years 7–11 · The Qur'an calls the sun, moon and stars signs that invite reflection and gratitude,…
• Plants: Parts & What They Need (Year 3) Year 3 · Meet the parts of a plant, learn what each one does, and find out what a plant needs to…
• Animals & Humans: Food, Bones & Teeth (Year 3–4) Years 3–4 · Discover why animals and humans must eat food, what a balanced diet looks like, and how…
• Living Things & Habitats (Year 4) Year 4 · Learn how we sort living things into groups, explore the places they live, and follow…
• Keeping Healthy: Diet, Exercise & the Body (Year 4–5) Years 4–5 · Find out how a good diet, exercise, sleep, cleanliness and water keep you well, and meet…
• Everyday Materials & Their Properties (Year 3) Year 3 · Learn about wood, metal, plastic, glass, fabric and rock. Find out what makes each one…
• Solids, Liquids & Gases (Year 4) Year 4 · Everything around us is a solid, a liquid or a gas. Learn how each one behaves, how ice…
• Rocks, Soils & Fossils (Year 3–4) Years 3–4 · Discover how rocks can be hard or soft, how soil is made, and how a fossil forms in rock…
• Light & Shadows (Year 3–6) Years 3–6 · Light comes from sources like the Sun and a torch. We need light to see, shadows form…
• Sound: How We Hear (Year 4) Year 4 · Sound is made by things vibrating. It travels through the air to our ears. Bigger…
• Forces & Magnets (Year 3–5) Years 3–5 · Forces are pushes and pulls. Friction slows things down. Magnets pull on some metals,…
• Electricity & Simple Circuits (Year 4–6) Years 4–6 · Learn how electricity flows around a complete loop, what makes a bulb light, which…
• Earth, Sun & Moon (Year 5) Year 5 · Discover how the Earth spins to give us day and night, how it orbits the Sun once a…