Science projects by class
Science projects for class 1 to 5: 224 ideas.
Every idea on this list suits class 1 to 5. 205 of them have numbered build steps, and each one explains the science, lists the materials and says how long it takes and how to stay safe. Pick a subject, or use the finder to narrow by type and difficulty.
Other classes: Class 6 to 8, Class 9 and 10, Class 11 and 12, College and diploma.
Physics
Physics projects for class 1 to 5
- Balloon-powered car
- Magnetic fishing game
- Paper cup telephone
- Simple electric circuit with a switch
- Sink or float, and the clay boat
- Air pressure holds up water
- CD hovercraft
- Bottle-cap water wheel that lifts a weight
- Thread spool crane with a fixed pulley
- Ruler seesaw: balancing coins at different distances
- Shoebox shadow theatre: light travels in straight lines
- How a stick’s shadow changes through the day
- Tissue box rubber band guitar: what changes the pitch?
- Water bottle xylophone: pitch and the amount of water
- Dancing rice drum: seeing sound vibrations
- Why does a clay ball sink but a clay boat float?
- How much salt makes an egg float?
- Balloon in a bottle: air takes up space
- Which shoe sole grips best? Friction on a tilting ramp
- What can a magnet pull through? Paper, cloth, wood and water
- Floating needle compass that finds north
- Paper spiral snake that spins over warm air
- Black tin versus white tin: which gets hotter in the sun?
- Bottle with three holes: water pressure grows with depth
- Ice cream stick catapult: how far does a pom-pom fly?
- Paper helicopter: wing length and fall time
- Plastic bag parachutes: does a bigger canopy fall slower?
- Balloon rocket on a string: action and reaction
- Cardboard bird that balances on a fingertip by its beak
- Cardboard castle drawbridge raised by thread and spools
- Village well model: a wheel and axle that lifts a bucket
- A screw is a wrapped ramp: paper triangle on a pencil
- Steel spoon mirrors: why one side flips your face
- Kaleidoscope from old CD case strips and a chips tube
- Making a rainbow with a mirror in a bowl of water
- The bending pencil: refraction in water, oil and glass
- Water drop magnifier: a lens from a single drop
- Spinning colour disc: seven colours blend into white
- Twanging ruler: how length changes pitch and loudness
- Cardboard ear trumpet that collects faint sounds
- Which spinning top lasts longest? Paper plate and bottle-cap tops
- Rubbed balloon lifts paper bits and bends a thin stream of water
- Which spoon gets hot first? Steel, wood and plastic with butter and beads
- Blow over a paper strip and watch it rise: fast air, low pressure
- Coin drops into a glass when the card is flicked: inertia tricks
- Which ball bounces highest? Drop height and floor surface test
- Pepper runs from soap: surface tension and a soap-powered boat
- Tin-can telephone: does a tight string carry sound better?
- Drinking straw pan pipes: tube length and pitch
- Paddle-wheel boat from a bottle and a rubber band
- Ice-cream stick tilt maze: guiding a marble by gravity
- Balloon-skin tin can drum where sound makes rice dance
- The pepper that runs away from soap: surface tension
- How strong is paper? Folds, tubes and a stack of books
- Wrap an ice cube: foil, wool, newspaper or cloth?
- Glass bottle xylophone: water level and pitch
- The spoon that rings like a bell: sound through string
- Straw rocket launcher: which fin shape flies the farthest?
- Paper planes: dart, glider and wide-wing flight distance and time
- Sound guessing jars: shake and listen
- Which fruits and vegetables float? Predict and test
- Foil boat: how many coins can it carry before it sinks?
- Magnet treasure hunt: what in my home is magnetic?
- Magnet pole push: two toy cars that chase and run away
- Paint mixing: a colour wheel from red, yellow and blue
- Torch and coloured cellophane: mixing lights on a wall
- Hand shadow animals: big and small shadows with a torch
- Toy shadow length: does a higher torch make a shorter shadow?
- Toy car ramp: does a steeper slope make the car go farther?
- Pencil rollers: how wheels help move a heavy box
- Cardboard gears with paper teeth that turn each other
- Drinking straw whistle: shorter straw, higher sound
- Comb and paper kazoo: feel your voice buzz
- Does sound travel through water? The spoon and bowl test
- Feel your voice: humming throat and dancing salt on cling film
- Ice cube melting: sun, shade, cloth and steel plate
- Does water take up more room when it freezes?
- Simple diamond paper kite and a flying test
- Paper plane race: which fold flies the farthest?
- Paper clip on the nose: does weight help a plane glide?
- Paper pinwheel that spins in the breeze
- Static comb: lifting paper bits and bending a water stream
- Rain stick from a cardboard tube: the sound of falling rain
Chemistry
Chemistry projects for class 1 to 5
- Rainbow in a glass (density tower)
- Erupting volcano model
- Turmeric paper strips that spot soaps and acids
- Growing sugar crystals on a string, like mishri
- Crystal shapes of salt, sugar and alum under a magnifier
- Stirring or warm water: which dissolves sugar faster?
- Making salt from salty water in a sunny tray
- Measuring the gas from baking soda and vinegar with a balloon
- Baking soda invisible ink revealed without any heat
- Chromatography of the colours in candy coatings
- Ice melting race: salt, sugar, sand or nothing?
- Three states of water in a bag taped to a sunny window
- Lava bottle with oil, water and a fizzing tablet
- Floating egg: how many spoons of salt does it take?
- Naked bouncy egg: vinegar dissolves the shell
- Frost on a tin can using only ice and salt
- Does dissolved sugar still weigh the same?
- Why apple slices turn brown and what stops it
- Candy colour race: hidden dyes in coated sweets
- Which fabric soaks up the most water: cotton, nylon, wool or polyester?
- Walking rainbow: colours that climb a paper towel
- Water drops on a coin: how many drops fit?
- What dissolves in water? A kitchen tray test
- Soap bubble wands: do square wands make square bubbles?
Biology
Biology projects for class 1 to 5
- What do seeds need to sprout?
- Parts of a plant model
- Bean seed against a glass jar: a root and shoot diary
- Turn a sprouting seed sideways: do roots still grow down?
- Plastic bag over a leafy twig: collect the water leaves give off
- Leaf rubbing album: parallel and net vein patterns
- Human skeleton from cardboard tubes, straws and bottle caps
- Five senses stations: mystery box, smell jars and sound tins
- Eggshells in cola, juice, milk and water: a tooth decay model
- Glitter germs: which handwashing method removes the most?
- Balcony bird diary: a 2 week tally of the birds around you
- Ant trails: which foods do ants choose and how do they find them?
- Celery stalk in coloured water: how water climbs a stem
- White flower with a split stem that drinks two colours
- Funnel and tube stethoscope to hear the heartbeat
- Four body joints from waste: ball, hinge, pivot and gliding
- Clay mouth model with the four tooth types and their jobs
- Tea-stained eggshell: water, brush or toothpaste, which cleans best?
- Balanced thali plate model: what each food group does for the body
- Bamboo, pine cone and brick insect hotel for garden helpers
- Seed travel models: wind wing, fluff parachute, floating husk, hook and spring
- Paper plate food chain and food web spinner
- Cardboard flower with removable parts that shows pollination
- Egg tray seed nursery: which seeds sprout first?
- Which bag ripens bananas faster? Ethylene gas at home
- Paper-cup stethoscope for listening to a heartbeat and counting it
- Sprouting moong and chana: a five-day length and weight log
- Nature walk collection tray with labels
- Leaf colour matching chart: how many greens?
- Mustard seeds on wet cotton wool: a growing diary
- Sprouting moong in a wet cloth: day by day
- Onion roots growing in a jar of water
- Grass head: a sock friend with growing hair
- Seed collection box: 12 seeds from the kitchen and garden
- Does a plant lean towards the window light?
- Heartbeat count: resting and after 20 jumps
- How big is my breath? Blowing up a balloon
- Fingerprint cards: loops, whorls and arches
- Egg carton teeth model: incisors, canines and molars
- Regrowing carrot and beetroot tops in a shallow dish
Maths
Maths projects for class 1 to 5
- Fraction wall
- Bottle-cap abacus that shows ones, tens, hundreds and thousands
- Base-ten blocks from matchsticks, matchboxes and a carton
- Hundred chart with coloured windows for skip counting patterns
- Clothes-peg number line with a jumping frog for adding
- Fraction pizza circles with a spinner that matches equal parts
- Sliding decimal point board for tenths and hundredths
- Times-table string art on a ten-point circle
- Paper plate angle maker with a sliding arm and degree scale
- Nail and rubber-band geoboard for shapes, perimeter and area
- Tangram set with a fraction and area table for each piece
- Hinged mirror pair that shows symmetry and how many images appear
- Bottle-cap pie chart built from a class survey of favourite games
- Multiplication snakes and ladders board from a cereal box
- Cardboard teaching clock with hands that move together
- Ice-cream stick fraction wall for halves, quarters and eighths
- How much does rice swell? Water ratio and volume maths
- Scaling a recipe: ratios, fractions and measuring cups
- Button sorting game: colour, size and number of holes
- Feely bag: guess the shape by touch alone
- Measuring with my hand span and my foot
- Shape detective: find circles, squares and triangles at home
- Bead string patterns: AB, AAB and ABC necklaces
- Dot rangoli: patterns with lines and symmetry on dots
- Paper tiles that fit together: which shapes leave no gaps?
- Cardboard clock with hands that move: hours and half hours
- My day on a clock chart: wake, school, play and sleep
- Number hopscotch: hop to add and subtract
- Paper money class shop: buy, sell and give change
- Rupee coins and notes matching cards
- Weekly pocket money chart: save, spend and share
Earth and space
Earth and space projects for class 1 to 5
- Solar system model
- Water cycle in a bowl
- Phases of the moon model
- Rain gauge
- Layers of the Earth model
- Balloon-and-bottle barometer with a two-week weather log
- Bottle wind vane on a compass rose that logs wind direction
- Water cycle in a zip bag taped to a sunny window
- Cut-away model of a composite volcano with magma chamber and vents
- Spinning globe and torch that shows day, night and sunrise times
- Paper-cup constellation projector for seven Indian sky patterns
- Planet sizes compared with fruit and seeds from the kitchen
- Shadow stick that finds true north and the real local noon
- Moon crater tray that tests how drop height changes crater size
- Cloth windsock that shows wind direction and strength
- Moon diary: sketching the Moon’s shape and rise time for 30 nights
- Pebble collection: sort by colour, feel and weight
- My weather diary with sun, cloud and rain symbols
- Cloud watching sketch book with cloud shapes
- Paper windsock that shows wind strength and direction
- Map of my room drawn on squared paper
- Picture map from home to school with landmarks
- Garden treasure hunt using north, south, east and west
- Evaporation race: wet cloth in sun, shade and wind
Electronics and robotics
Electronics and robotics projects for class 1 to 5
Environment
Environment projects for class 1 to 5
- Plastic bottle bird feeder
- Food chain and food web model
- Four-bin waste sorting game with 40 picture cards
- What rots and what does not: a six-week burial test
- How much water a dripping tap wastes, measured and scaled to a year
- Bucket versus running tap: measuring water used for daily tasks
- Biodiversity diary of one square metre kept for a month
- Gravity-fed bottle bird feeder that refills itself
- Newspaper roll pencil stand
- Bottle cap mosaic picture of a fish or a flower
- Egg carton flowers and a crawling caterpillar
- Old sock puppet family for a storytelling show
- Newspaper gift bag to replace plastic bags
- Plastic bottle hanging planter for a small herb
Computing and coding
Computing and coding projects for class 1 to 5
- Scratch game: catch the falling fruit with a bowl
- Scratch maze game that senses wall colour
- Scratch times-table quiz with random questions and score
- Scratch animated story of a monsoon day using broadcasts
- Scratch road-crossing safety game with a pedestrian signal
- Scratch Hindi to English word game using two lists