Try your hand at these fun and easy science experiments and activities for kids. Explore science concepts and discover the world around you using simple ingredients found in the home or at school.
CSIRO takes safety seriously in all of our activities and experiments. While we ensure all activities and demonstrations are as safe as possible, there are some precautions which all young scientists need to keep in mind.
Biology activities and experiments
Inside you, inside a shell or inside a forest - explore the insides of life with these fun biology activities and science experiments you can do at home or with your students in the classroom.
A-Salt on salinity
Salinity is a huge environmental problem in Australia. Dryland salinity, which is rising salt that damages soil, plants and buildings, is hard to comprehend and harder still to stop. Approximately 5.7 million hectares are at risk of, or affected by, dryland salinity. In 50 years, it is estimated this area may increase to more than 17 million hectares.
Autumn leaf display
Follow these instructions to make your own autumn leaf display and learn how to preserve leaves.
Backyard Bug Biodiversity
Use the backyard bugs guide to help identify insects in your neighbourhood
How to make a paper DNA model
Learn about DNA and its role in life, then grab some scissors and make your own paper DNA model.
Follow these instructions to take a peek inside a flower and learn the names of all its parts.
Follow these instructions to take a closer look at a mushroom and make pretty images using its spores.
Need a hand?
Follow these instructions to learn more about how hands work. All it takes is a little cardboard and string.
Make a type of paper that will grow into a plant!
When spring is in the air, you might be able to take a closer look at pollen. Find out how with this activity.
Chemistry activities and experiments
Explosions, slime and forensic science – what's not to love about these chemistry activities and experiments you can do at home with your kids or at school with your students?
Follow these instructions to do an activity with colourful milk and learn about surface tension.
How to make bath bombs
Every wondered what makes bath bombs fizz? Follow this recipe to make your own DIY bath bombs at home (or at school) and find out the chemistry behind how they work.
How to make bubble print paper
Follow these instructions to create a work of art and chemistry while learning some maths.
Follow these instructions to learn about acids and bases using red cabbage.
How to make cornflour slime
Did you know cornflour slime is a very special fluid? Follow this simple recipe to make slime without borax and find out why this fluid can behave like a solid. A great kids science activity!
Learn more about gases by creating a soft drink fountain using lollies. What a sweet way to find out more about chemistry!
Follow these instructions to learn about metamaterials and the amazing properties they gain from their unusual structures.
Money to burn
Follow these instructions to carry out a fiery chemical trick.
Follow these instructions to find out how popcorn relates to carbon dating.
How to make a rubber egg
Follow these instructions and find out how to make a bouncy rubber egg. This activity is a fun way to learn about the chemical reactions that occur when you put an egg in vinegar!
Follow these instructions to find out about the amazing shrinking properties of some plastics.
What do robots eat for breakfast
How much iron is there in breakfast cereal? Is it the same sort of iron that might be used in steel?
Earth and space science activities and experiments
Underfoot or overhead? Get hands-on with the world and beyond.
How a GPS works
Follow these instructions to make a basic GPS and create a treasure hunt for your friends.
Kitchen, El Nino
Follow these instructions to create an El Niño effect in your kitchen, and learn about global weather patterns.
How to make a cloud in a jar
Have you ever wondered how clouds form? Using a only a few easy to find household items this hands-on activity will show you how.
Make an earthquake detector
Follow these instructions to make your own seismometer to measure movement.
Geology is a lot easier to digest when chocolate is involved.
Follow these instructions to find out more about geology and the rocks beneath our feet.
Why is the sky blue
On a clear day, the sky looks bright blue. At dusk, a sunset can show reds, pinks and oranges. Why is the sky blue? What makes the sunset red? Try this activity to find out.
Maths activities and experiments
These hands-on maths activities add up to sum fun for primary school students – no calculators required.
A tangled web string puzzle
Grab a partner and work together to try and solve this tangled web math puzzle. A fun activity to help primary school students to learn why knots are important in mathematics.
Mark and recapture
Use mark and recapture to estimate the population of Smarties in a candy bowl.
Math-magic pick a card trick
It's not magic, it's math! Follow these step-by-step instructions and learn how to do the 'pick a card, any card' trick. Master the skill and then amaze your friends with your mind reading abilities.
Mathematical mind reading magic trick
Follow these instructions to amaze your friends with your mind reading abilities using simple maths and a couple of tricks. A fun game to play with your friends
Measuring pi using a pie
Follow these instructions to measure the constant pi using a pie and then you can eat the leftovers.
Making a moebius strip
Make your own Moebius strip and learn about topology!
Physics activities and experiments
Balloons, rockets and rainbows are just some of the hands-on activities and experiments that make physics fantastic fun.
Collide a ball energy transfer physics experiment
Use bouncing balls to demonstrate collisions and energy transfer with this simple physics experiment.
Make different coloured shadows using torches and cellophane.
Follow these instructions to make your own jelly lenses and have fun with bending light.
How to make a kaleidoscope
Grab some sand, confetti or glitter and get ready to make your own kaleidoscope. Have fun with mirrors and reflections while learning how a kaleidoscope creates beautiful patterns. A fascinating science project for all ages.
Light up your light bulbs
Light up a fluorescent tube using static electricity.
Soap powered boat
Make a boat that uses detergent to move through the water and learn about surface tension.
Follow these instructions to make your own pen lid diver and learn about buoyancy.
Wobbly balloon experiment
Learn about gravity and air resistance as you make a balloon wobble through the air. A simple physics experiment for the classroom.