AI Constitution

Resources · Learning tool

Education Concept Tracker

A prerequisite knowledge graph of 1590 learning concepts across 8subjects. Track what you've mastered and see exactly what you're ready to learn next — the topics whose prerequisites you've already met. Built on the Marble Open Skill Taxonomy.

Sign in to track your progress and get personalized recommendations. You can browse freely below.

Knowledge-graph map

Science
Mastered Ready to learn LockedHover a node for its description · click to open
Animal HomesAnimal Homes — locked Know that animals make or find many different kinds of homes — birds build nests, rabbits dig burrows, bees live in hives, hermit crabs use empty shells, spiders spin webs — and that these shelters protect them and their youngAnimals EverywhereAnimals Everywhere — frontier Know that animals live all over the world — on land, in water, and in the air — and that every continent, even icy Antarctica, is home to animals, each suited to the conditions where they liveEndangered & Extinct Sp…Endangered & Extinct Species — locked Understand why some animal species become endangered or go extinct — habitat destruction, hunting/poaching, pollution, climate change, and invasive species — and know examples like the giant panda, mountain gorilla, Amur leopard, and the now-extinct dodo and thylacine, using the IUCN Red List as the system scientists use to track threatened speciesInvasive SpeciesInvasive Species — locked Understand that invasive species are animals (or plants) that have been introduced to a place where they don't naturally belong — like grey squirrels outcompeting red squirrels in the UK, cane toads poisoning native predators in Australia, or rabbits devastating ecosystems in Australia — and that they can cause serious harm to native wildlife by competing for food, spreading disease, or having no natural predatorsDinosaurs Were RealDinosaurs Were Real — frontier Understand that dinosaurs were real animals that lived on Earth a very long time ago and are now extinct — none are alive todayFossils & Palaeontologi…Fossils & Palaeontologists — locked Understand that fossils are the remains of ancient living things preserved in rock, and that scientists called palaeontologists study fossils to learn about dinosaursFossils as EvidenceFossils as Evidence — locked Analyse and interpret data from fossils to provide evidence of organisms and environments that existed long agoChanging Scientific Kno…Changing Scientific Knowledge — frontier Evaluate competing scientific explanations about dinosaurs by weighing fossil evidence — understanding that scientific knowledge changes as new fossils are discovered and new methods of analysis are developedLife Changed Over TimeLife Changed Over Time — locked Recognise that living things have changed over time and that fossils provide information about organisms that inhabited the Earth millions of years agoSeasonal changesSeasonal changes — frontier Observe changes across the four seasons and describe weather associated with each season, including how day length variesEvaporation and condens…Evaporation and condensation — frontier Name and use vocabulary for the water cycle — evaporation, condensation, precipitation, collection, transpiration, water vapour, runoff, groundwater — and describe each stage of the cycle using these terms in the correct sequenceHow fossils formHow fossils form — locked Describe in simple terms how fossils are formed when things that have lived are trapped within rock over millions of yearsProperties of materialsProperties of materials — frontier Compare and group different kinds of rocks based on their appearance and simple physical properties such as hardness, texture, and colourShapes of land and waterShapes of land and water — frontier Develop a model to represent the shapes and kinds of land (mountains, valleys, plains) and bodies of water (rivers, lakes, oceans) in an areaWhere water is found on…Where water is found on Earth — locked Identify where water is found on Earth and understand that water can exist as solid (ice) or liquid, recognising water in oceans, rivers, glaciers, and undergroundTypes of rocksTypes of rocks — frontier Use vocabulary for Earth's geological processes and rock types — igneous, sedimentary, metamorphic, erosion, weathering, deposition, fossil, sediment, strata, permeable, impermeable — and apply these when explaining how rocks form and how landscapes change over timeEarth's atmosphereEarth's atmosphere — locked Develop a model to describe ways the geosphere, biosphere, hydrosphere, and atmosphere interact as connected Earth systemsRock layers and Earth's…Rock layers and Earth's history — frontier Interpret cross-section diagrams of the Earth's interior, geological strata, and rock cycle; read and label layers (crust, mantle, outer core, inner core); understand that deeper layers in sedimentary sequences are olderReducing Human ImpactReducing Human Impact — frontier Communicate solutions that will reduce the impact of humans on the land, water, air, and other living things in the local environmentHabitat VocabularyHabitat Vocabulary — frontier Name and use vocabulary for where living things are found — habitat, environment, microhabitat, conditions, woodland, ocean, desert, rainforest, pond — and use terms to describe what animals need to survive: food, water, shelter, space, and suitable conditionsHabitats & Basic NeedsHabitats & Basic Needs — locked Identify that most living things live in habitats to which they are suited and describe how habitats provide for basic needs and how organisms depend on each otherLiving, Dead & Never Al…Living, Dead & Never Alive — locked Explore and compare the differences between things that are living, dead, and things that have never been aliveSimple Food ChainsSimple Food Chains — locked Describe how animals obtain their food from plants and other animals, using the idea of a simple food chain, and identify different sources of foodChanging EnvironmentsChanging Environments — locked Recognise that environments can change and that this can sometimes pose dangers and challenges to living thingsEcology VocabularyEcology Vocabulary — frontier Use vocabulary for feeding relationships and ecological roles — producer, consumer, predator, prey, herbivore, carnivore, omnivore, decomposer, food chain, food web, nutrient cycle — and describe how energy and matter flow through ecosystems using these termsFood Chains & Energy Tr…Food Chains & Energy Transfer — locked Construct and interpret food chains identifying producers, predators, and prey, and understand energy transfer between trophic levelsHuman impact on environ…Human impact on environments — frontier Use vocabulary for human impact on the environment — pollution, habitat destruction, deforestation, biodiversity, conservation, renewable energy, non-renewable energy, fossil fuel, carbon footprint, sustainability, endangered, extinct — and apply these when discussing environmental issues and human choicesReading Food Web Diagra…Reading Food Web Diagrams — frontier Read and interpret food web diagrams — identify producers, primary and secondary consumers, and decomposers; trace energy flow along food chains within the web; predict the effect of removing or adding a speciesAnimal Life CyclesAnimal Life Cycles — locked Describe differences in the life cycles of mammals, amphibians, insects, and birds, comparing metamorphosis with direct developmentMatter Cycling in Ecosy…Matter Cycling in Ecosystems — locked Develop a model to describe the movement of matter among plants, animals, decomposers, and the environment in an ecosystemEvidence for EvolutionEvidence for Evolution — frontier Describe the main types of evidence for evolution: the fossil record (change over time), comparative anatomy (homologous structures), and the geographic distribution of related speciesSunlight warms things upSunlight warms things up — frontier Make observations to determine the effect of sunlight on Earth's surface, noticing that sunlight warms the ground, water, and objectsNaming types of energyNaming types of energy — frontier Name and use vocabulary for types of energy and energy transfer — kinetic energy, potential energy, heat energy, light energy, sound energy, electrical energy, chemical energy, stored energy, energy transfer, energy transformation — and describe energy changes in familiar situations using these termsBuilding a simple circu…Building a simple circuit — locked Construct a simple series electrical circuit, identifying and naming its basic parts: cells, wires, bulbs, switches, and buzzersWhat uses electricity a…What uses electricity at home — frontier Identify common appliances that run on electricity and understand that electricity is a form of energy that powers devices in everyday lifeCircuit vocabularyCircuit vocabulary — frontier Use technical vocabulary for electrical circuits — circuit, component, cell, battery, current, voltage, resistance, conductor, insulator, switch, series circuit, parallel circuit — and apply these when describing, drawing, and designing working circuitsHow energy travels arou…How energy travels around — locked Observe and provide evidence that energy can be transferred from place to place by sound, light, heat, and electric currentsReading and drawing cir…Reading and drawing circuit diagrams — frontier Draw and read simple circuit diagrams using standard symbols for cells, bulbs, switches, buzzers, and wires; identify whether a circuit is complete or broken from a diagram; match circuit diagrams to physical circuitsStatic electricity and…Static electricity and sparks — frontier Explain static electricity as the build-up of electric charge through friction, describe how charged objects attract or repel each other, and relate static discharge to everyday phenomena such as lightningRenewable vs non-renewa…Renewable vs non-renewable energy — frontier Distinguish between renewable energy resources (solar, wind, hydroelectric, tidal, geothermal, biomass) and non-renewable resources (coal, oil, gas, nuclear), comparing their advantages, disadvantages, and environmental impactsForces VocabularyForces Vocabulary — frontier Name and describe forces using precise vocabulary — force, push, pull, twist, stretch, squash, contact force, non-contact force, gravity, weight, friction, air resistance, upthrust — and distinguish between forces that require physical contact and forces that act at a distancePushes & PullsPushes & Pulls — frontier Understand that pushes and pulls are forces that can change the speed or direction of an object's motion, and compare the effects of different strengths and directionsDrawing Force DiagramsDrawing Force Diagrams — frontier Draw and interpret force diagrams showing forces as labelled arrows — where the arrow's length represents the force's magnitude and its direction shows which way the force acts; show multiple forces on one object; identify from the diagram whether forces are balanced (equal arrows in opposite directions, no resultant) or unbalanced (arrows of different sizes, producing a resultant); represent the resultant with a single arrowPredicting Motion Patte…Predicting Motion Patterns — locked Make observations and measurements of an object's motion to provide evidence that a pattern can be used to predict future motionForce & Motion Vocabula…Force & Motion Vocabulary — frontier Use technical vocabulary for force and motion — balanced forces, unbalanced forces, resultant force, acceleration, deceleration, speed, moment, lever, fulcrum, mechanical advantage — and apply these when explaining and predicting how forces affect the motion and position of objectsReading Distance-Time G…Reading Distance-Time Graphs — frontier Read and plot distance-time graphs for moving objects; interpret the gradient (steepness) of a line as speed; identify stationary periods (horizontal sections), constant speed (straight diagonal lines), and relative speeds by comparing gradients; calculate average speed from the gradient of a straight-line segment using speed = distance ÷ timeSpeed & Distance-Time G…Speed & Distance-Time Graphs — locked Calculate average speed using the equation speed = distance ÷ time, represent journeys on distance-time graphs, and interpret gradient as speed and flat sections as stationary periodsDeformation & Fluid Pre…Deformation & Fluid Pressure — frontier Explain forces associated with deforming objects (elastic and inelastic deformation), thermal expansion and contraction of materials, and how fluid pressure acts in all directions and increases with depthCommon minibeasts: nami…Common minibeasts: naming and recognising — locked Recognising and naming common minibeasts: ladybird, ant, bee, butterfly, spider, snail, worm, woodlouse, caterpillar, beetle. Building positive attitudes toward all minibeasts, not just the 'pretty' ones.What is a minibeast?What is a minibeast? — frontier What is a minibeast? Small creatures without backbones, found in gardens, parks, and woodland. Bug hunts — searching under logs, stones, and leaves using magnifying glasses to observe minibeasts up close.Describing Material Pro…Describing Material Properties — locked Describe simple physical properties of everyday materials such as hard/soft, stretchy/stiff, shiny/dull, rough/smooth, waterproof/absorbent, transparent/opaqueNaming Everyday Materia…Naming Everyday Materials — locked Identify and name a variety of everyday materials including wood, plastic, glass, metal, water, and rockObjects vs MaterialsObjects vs Materials — frontier Distinguish between an object and the material from which it is made, understanding that objects can be made from different materialsStates of Matter Vocabu…States of Matter Vocabulary — frontier Name and distinguish the three states of matter — solid, liquid, and gas — using properties vocabulary: hard, rigid, runny, flows, keeps its shape, fills its container; use 'change of state' to describe what happens when materials are heated or cooledChanges & Separation Vo…Changes & Separation Vocabulary — frontier Use process vocabulary for changes of state and material separation — dissolve, solution, soluble, insoluble, evaporate, condense, melt, freeze, filter, sieve, mixture, separate — and understand precisely what each term describes, including the important distinction between dissolving and meltingDrawing Particle Diagra…Drawing Particle Diagrams — frontier Draw and interpret particle diagrams — dot representations showing the arrangement, spacing, and movement of particles in solids (close, regular, vibrating in place), liquids (close, random, flowing past each other), and gases (widely spaced, moving rapidly in all directions) — and use these diagrams to explain observable properties such as fixed shape, fixed volume, and compressibilityHeating & Cooling Chang…Heating & Cooling Changes — locked Observe and describe that some materials change state when heated or cooled, and measure the temperature at which changes occur in degrees CelsiusTesting Materials for U…Testing Materials for Uses — frontier Give reasons, based on evidence from comparative and fair tests, for the particular uses of everyday materials including metals, wood, and plasticMaterial Properties Voc…Material Properties Vocabulary — frontier Use technical vocabulary to describe and compare material properties — conductor, insulator, thermal, electrical, transparent, opaque, translucent, soluble, insoluble, magnetic, flexible, rigid, density — and apply these terms precisely when selecting and justifying materials for particular purposesAcid Reactions & SaltsAcid Reactions & Salts — locked Describe and write word equations for the reactions of acids with metals, alkalis (neutralisation), and metal oxides/hydroxides, identifying the salt produced in each caseAcids, Alkalis & pHAcids, Alkalis & pH — frontier Define acids and alkalis in terms of hydrogen ion concentration, describe the pH scale (0–14), and explain how indicators are used to identify and measure acidity or alkalinityEarth's Atmosphere & CO2Earth's Atmosphere & CO2 — frontier Describe the composition of Earth's atmosphere (mainly nitrogen and oxygen, with small amounts of CO₂ and other gases), explain how human activity increases CO₂, and describe the impact on global climateFinite Resources & Recy…Finite Resources & Recycling — frontier Explain that many raw materials (metals, fossil fuels, minerals) are finite resources, describe the environmental costs of extraction, and evaluate the benefits of recycling and the circular economyReactions That Release…Reactions That Release or Absorb Heat — frontier Distinguish between exothermic reactions (release energy, temperature rises) and endothermic reactions (absorb energy, temperature falls), with everyday and industrial examplesCeramics, Polymers & Co…Ceramics, Polymers & Composites — frontier Describe the properties and uses of ceramics (hard, brittle, heat-resistant), polymers (flexible, lightweight, variable), and composites (combine properties of constituent materials), giving real-world examples of eachCoasts & BeachesCoasts & Beaches — frontier Know what a coast or beach is — the place where land meets the ocean — and that different coasts can be sandy, rocky, or muddy, each with different plants and animalsOcean Animal VarietyOcean Animal Variety — frontier Recognise that the ocean is home to an amazing variety of animals — from tiny seahorses and colourful clownfish to enormous whales and sharks — and that ocean animals come in many shapes and sizesOcean Food ChainsOcean Food Chains — frontier Describe a simple ocean food chain: tiny plants (phytoplankton) are eaten by small animals, which are eaten by bigger fish, which are eaten by top predators like sharks — showing that all ocean life depends on others for foodRock Pool HabitatsRock Pool Habitats — frontier Explore rock pools (tide pools) as small ocean habitats where crabs, anemones, starfish, and small fish can be found, and understand that these creatures are adapted to survive crashing waves and changing water levelsWhales & Dolphins Are M…Whales & Dolphins Are Mammals — frontier Know that whales and dolphins are mammals, not fish — they breathe air, are warm-blooded, and feed their babies milk — even though they live in the oceanWhat Is the Ocean?What Is the Ocean? — frontier Know that oceans are huge bodies of salt water that cover most of Earth's surface, and that the ocean is home to an enormous number of living thingsWhat Ocean Animals NeedWhat Ocean Animals Need — frontier Understand that ocean animals need food, shelter, and the right conditions to survive — just like land animals — and that different parts of the ocean provide for different animals' needsClassifying Ocean Anima…Classifying Ocean Animals — locked Classify ocean animals into major groups: fish (breathe through gills, have scales), marine mammals (breathe air, warm-blooded, feed milk), and invertebrates (no backbone — jellyfish, octopuses, crabs, starfish)Ocean Food WebsOcean Food Webs — locked Understand ocean food webs: multiple interconnected food chains where energy flows from phytoplankton (producers) through zooplankton, small fish, and large predators, and that removing one species affects the whole webBody Parts & SensesBody Parts & Senses — frontier Identify, name, and locate basic parts of the human body and associate each body part with its senseCommon Plants & TreesCommon Plants & Trees — frontier Identify and name common wild and garden plants, including deciduous and evergreen treesHerbivores, Carnivores…Herbivores, Carnivores & Omnivores — locked Classify common animals as carnivores (eat meat), herbivores (eat plants), or omnivores (eat both)Living Things VocabularyLiving Things Vocabulary — frontier Name and use vocabulary for what makes something living — alive, dead, never been alive, movement, nutrition, growth, reproduction, sensitivity, excretion — and apply these terms when classifying objects and explaining why plants and animals count as living thingsNaming Common AnimalsNaming Common Animals — frontier Identify and name common animals from major groups: fish, amphibians, reptiles, birds, and mammalsWhat Living Things NeedWhat Living Things Need — frontier Understand what plants and animals (including humans) need to survive: water, food, air, and suitable conditionsAnimal Classification V…Animal Classification Vocabulary — frontier Use vocabulary for classifying animals and describing life cycles — vertebrate, invertebrate, mammal, bird, reptile, amphibian, fish, insect, arachnid, larva, pupa, metamorphosis, gestation, offspring, complete metamorphosis, incomplete metamorphosis — and apply these correctly when sorting and comparing organismsDrawing Life Cycle Diag…Drawing Life Cycle Diagrams — frontier Draw and interpret life cycle diagrams for flowering plants, insects (complete and incomplete metamorphosis), birds, and mammals — labelling stages, describing transitions, and comparing cycles across speciesLife Cycles of OrganismsLife Cycles of Organisms — locked Develop models to describe that organisms have unique and diverse life cycles but all share the common stages of birth, growth, reproduction, and deathHow animals adapt to en…How animals adapt to environments — locked Identify how animals and plants are adapted to suit their environment and understand that adaptation may lead to evolution over timeInheritance VocabularyInheritance Vocabulary — frontier Use vocabulary for variation and inheritance — inherited characteristic, acquired characteristic, variation, offspring, trait, species, breed, genetic, environment — and apply these when comparing organisms and explaining similarities and differences within and between speciesOrgan Systems VocabularyOrgan Systems Vocabulary — frontier Use technical vocabulary for the major organ systems — organ, organ system, circulatory system, digestive system, respiratory system, skeletal system, muscular system, nutrient, oxygen, carbon dioxide, blood vessel, artery, vein, capillary, enzyme — and describe the function of each system using these termsEvolution vocabularyEvolution vocabulary — frontier Use technical vocabulary for evolution and natural selection — adaptation, evolution, natural selection, extinct, extinction, fossil record, species, common ancestor, mutation, variation — and explain the mechanism of natural selection using these terms in the correct sequenceCells Under the Microsc…Cells Under the Microscope — frontier Understand that all living organisms are made of cells and use a light microscope to observe, interpret, and record cell structureBody Temperature Regula…Body Temperature Regulation — frontier Explain how the human body detects and responds to environmental changes including temperature, including the role of the skin in temperature regulation (sweating, shivering, vasodilation, vasoconstriction)Where Are the Poles?Where Are the Poles? — frontier Know that Earth has a North Pole and a South Pole — the two coldest places on the planet — and be able to find them on a globe, understanding that they are at the very top and very bottom of the Earth, as far from the Equator as possibleRainforest LayersRainforest Layers — locked Know that a rainforest has four layers from ground to sky — the forest floor (dark, damp, full of decomposing leaves), the understory (small trees and shrubs in the shade), the canopy (a thick roof of treetops where most animals live), and the emergent layer (the tallest trees poking above the canopy into bright sunlight)What Is a Rainforest?What Is a Rainforest? — frontier Know that a rainforest is a thick, tall forest found in hot, wet places near the Equator where it rains almost every day, creating a warm, damp environment where plants and animals thriveAsking scientific quest…Asking scientific questions — frontier Ask simple scientific questions and recognise that they can be answered in different ways including observation, testing, and researchObservation vs Interpre…Observation vs Interpretation — frontier Notice the difference between what you observed and what you think it means — 'the ice melted' is an observation; 'the ice melted because of the heat' is an interpretationSun, Moon & StarsSun, Moon & Stars — frontier Identify the Sun, Moon, and stars as objects in the sky and describe basic differences: the Sun gives light and heat during the day, stars are tiny points of light at night, and the Moon can appear in both the day and night skyWhat Astronauts DoWhat Astronauts Do — frontier Know that astronauts are people who travel to space in rockets, that humans have walked on the Moon (Apollo missions), and that astronauts today live and work on the International Space StationAsteroids, Comets & Dwa…Asteroids, Comets & Dwarf Planets — frontier Identify other objects in the solar system beyond planets: asteroids (rocky bodies mostly between Mars and Jupiter), comets (icy bodies with tails when near the Sun), and meteoroids/meteors/meteorites (space rocks that enter Earth’s atmosphere)How Telescopes WorkHow Telescopes Work — frontier Know that telescopes are instruments that help us see distant objects in space, and that space telescopes like Hubble and James Webb orbit above Earth’s atmosphere to get clearer views of the universeNaming the PlanetsNaming the Planets — frontier Name the planets in our solar system in order from the Sun and use vocabulary for space — planet, star, sun, moon, satellite, orbit, solar system, galaxy, universe, asteroid, comet — applying these correctly when describing the structure of the solar system and objects we see in the skyWhy seasons changeWhy seasons change — frontier Make observations at different times of year to relate the amount of daylight to the time of year, noticing longer days in summer and shorter days in winterEarth & Space VocabularyEarth & Space Vocabulary — frontier Use technical vocabulary for Earth's motion and the wider universe — rotation, revolution, axis, tilt, orbit, light year, gravitational force, atmosphere, lunar phases, waxing, waning, solstice, equinox, eclipse — and apply these when explaining day and night, the seasons, and the Moon's phasesBasic Body NeedsBasic Body Needs — frontier Know that the body needs food for energy, water to stay hydrated, sleep to rest and grow, and exercise to keep muscles and the heart strong — and that these are basic needs every human body hasBones & MusclesBones & Muscles — frontier Know that the body has a skeleton made of bones inside it that gives the body its shape and protects important organs like the brain (skull) and heart (ribcage), and that muscles attached to bones allow the body to moveHow Breathing WorksHow Breathing Works — frontier Know that we breathe air into our lungs through the nose and mouth, that our lungs take in oxygen from the air which our body needs to stay alive, and that we breathe out carbon dioxide as wasteThe Brain Controls the…The Brain Controls the Body — frontier Understand that the brain is the body’s control centre: it receives messages from the senses, thinks and makes decisions, and sends messages through nerves to tell muscles what to doThe Five SensesThe Five Senses — frontier Explore the five senses in detail: sight uses eyes to detect light, hearing uses ears to detect sound, touch uses skin to feel pressure and temperature, taste uses the tongue to detect flavours, and smell uses the nose to detect odoursThe Heart & BloodThe Heart & Blood — frontier Understand that the heart is a muscle that pumps blood around the body through tubes called blood vessels, and that we can feel our heartbeat by placing a hand on our chest or fingers on our wristCells, Tissues & OrgansCells, Tissues & Organs — frontier Understand that the body is organised in a hierarchy: tiny cells are the building blocks, groups of similar cells form tissues, tissues combine into organs (like the heart or stomach), and organs work together in organ systems (like the circulatory system)Types of TeethTypes of Teeth — frontier Identify the four types of human teeth (incisors for cutting, canines for tearing, premolars and molars for grinding) and understand that tooth shape is linked to function, just as in other animals — herbivores have flat teeth, carnivores have sharp teethEarth Is Made of RockEarth Is Made of Rock — frontier Understand that Earth is made of rock and other solid materialsEarthquake SafetyEarthquake Safety — frontier Know basic earthquake safety: drop, cover, and hold on; move away from windows; tell a trusted adultFast & Slow Earth Chang…Fast & Slow Earth Changes — frontier Understand that Earth's surface changes: some changes are quick (eruptions, earthquakes) and some are slow (wind, water wearing away rock)Power of EruptionsPower of Eruptions — frontier Appreciate that volcanic eruptions are powerful events that can change the landscapeWhat Is a VolcanoWhat Is a Volcano — frontier Know what a volcano is: an opening in Earth's surface where hot melted rock (lava) comes outWhat Is an EarthquakeWhat Is an Earthquake — frontier Know what an earthquake is: a sudden shaking of the ground that can be strong or weakLight & Seeing in the D…Light & Seeing in the Dark — locked Observe that objects in darkness can be seen only when illuminated by a light sourceLight & Sound VocabularyLight & Sound Vocabulary — frontier Name and use vocabulary for how light and sound behave — light source, transparent, translucent, opaque, shadow, reflect, vibration, pitch, volume — and apply these terms correctly when describing observations about how light travels and how sounds are made and changedVibrations & SoundVibrations & Sound — locked Understand that vibrating materials can make sound, and that sound can make materials vibrateWave Behaviour Vocabula…Wave Behaviour Vocabulary — frontier Use technical vocabulary for wave behaviour — refraction, absorption, reflection, scattering, amplitude, frequency, wavelength, echo, spectrum, angle of incidence, angle of reflection — and apply these when explaining how light and sound travel and interact with different materialsDressing for the WeatherDressing for the Weather — frontier Choose appropriate clothing and equipment for different weather conditions — coat and umbrella for rain, sun hat and sunscreen for hot sun, warm layers for cold — understanding that weather affects what we do and how we prepare each dayRain & PuddlesRain & Puddles — frontier Know that rain falls from clouds in the sky, that puddles disappear because water goes back into the air, and that this is part of how water moves around — up into the sky and back down againSeasons & Weather Patte…Seasons & Weather Patterns — frontier Know that weather changes with the seasons — spring brings rain and new growth, summer is warmest with long days, autumn brings cooling and falling leaves, winter is coldest with short days — and that this pattern repeats every yearStorm SafetyStorm Safety — frontier Know basic storm safety: during thunder and lightning, go indoors or into a car, stay away from trees and water; understand that storms can be frightening but there are ways to stay safeTemperature & Thermomet…Temperature & Thermometers — frontier Understand temperature as how hot or cold something is, that a thermometer measures temperature, and use words like hot, warm, cool, and cold to describe how the air feels on different daysTypes of WeatherTypes of Weather — frontier Identify and describe different types of weather — sunny, rainy, windy, snowy, cloudy, foggy, stormy — and describe what the weather is like today using simple vocabularyWhat Is Wind?What Is Wind? — frontier Know that wind is moving air, that it can be gentle (a breeze) or very strong (a gale), and that wind can move things like leaves, kites, flags, and even push peopleCloud TypesCloud Types — locked Identify the three main cloud types — cumulus (fluffy, fair weather), stratus (flat layers, overcast or drizzle), and cirrus (thin wisps, high up) — and understand that clouds form when water vapour in the air cools and condenses into tiny dropletsGeography & Local Weath…Geography & Local Weather — locked Know that different places around the world have very different typical weather — tropical places are hot and wet all year, deserts are very dry, polar regions are freezing cold — and that geography (distance from the equator, altitude, nearness to the sea) affects local weatherThe Water CycleThe Water Cycle — locked Understand the water cycle: the Sun heats water in oceans and lakes causing it to evaporate into water vapour, the vapour rises and cools to form clouds (condensation), and water falls back to Earth as rain, snow, or hail (precipitation) — then the cycle repeatsWeather vs ClimateWeather vs Climate — locked Distinguish between weather and climate: weather is what the atmosphere is doing right now or today (it can change hour to hour), while climate is the typical pattern of weather in a place over many yearsNatural resourcesNatural resources — locked Obtain and combine information to describe that energy and fuels are derived from natural resources and that their uses affect the environmentSun-Driven Weather Syst…Sun-Driven Weather Systems — locked Understand how the Sun drives weather: the Sun heats Earth's surface unevenly (land heats faster than water, equator gets more heat than poles), creating differences in air pressure that cause wind patterns, ocean currents, and large-scale weather systemsNet Zero & Energy Trans…Net Zero & Energy Transition — locked Evaluate the energy transition required to reach net zero: renewable energy scaling, electrification of transport and heat, green hydrogen; describe carbon capture and storage (CCS) and direct air capture (DAC); introduce proposed solar radiation management techniques (stratospheric aerosol injection, marine cloud brightening) and their potential risks and governance challenges; critically evaluate the role of individual behaviour change versus systemic policy in reducing emissions
← Back

Fluent adding and subtracting within 100

Mathematics · Addition & Subtraction · procedural

Fluently add and subtract within 100 using strategies based on place value, properties of operations, and the relationship between addition and subtraction

Sign in to track this

What mastery looks like

  • Add two-digit numbers within 100 efficiently (e.g. 46 + 37 using place-value partitioning)
  • Subtract two-digit numbers within 100 fluently (e.g. 83 − 25)
  • Choose between strategies (decomposing, compensating, using known facts) based on the numbers involved

Check your understanding

Can Fluent adding and subtracting within 100 reliably add or subtract two-digit numbers like '68 + 27' or '91 − 45', choosing the best strategy for each problem?

Prerequisites

Required first

Unlocks (6 directly)