These Key Stage 2 science experiments are great for school or home and perfect to sit alongside science in the classroom for Key Stage 2 in the UK or for children aged between around 7-11 who love science!
If a science challenge is more your thing, we've got easy STEM challenges using newspaper, FREE STEM Challenge cards and lots of easy ideas for science fun at home created in association with the Primary Science Teaching Trust.
If you like a good science book This IS Rocket Science has lots of easy ideas that cover forces including gravity, air resistance and friction as well as a science activity linked to each planet in the solar system.
Plant Science Investigations for Key Stage 2
Dissect a flower to identify the different parts, learn about the transport of water in plants or grow new plants from tissue cuttings.
Make a flowering plant lifecycle spinner.
Make colour changing flowers to learn about transpiration and transport of water in plants. This one always provides a bit of wow factor!
Animals including Humans
Diet and Exercise
Set up an experiment with eggs to discover how and why different foods and drinks stain teeth.
Find out how much sugar some common drinks contain and compare them.
Discover how exercise affects heart rate with a simple investigation.
Human Body - Key Stage 2 Science Experiments
Find out how the lungs and heart work with a model lung and model heart.
Make a model brain using play dough!
Evolution
Learn about Charles Darwin with a fun natural selection activity.
This sedimentary rocks and fossil activity from Teach Beside Me looks fantastic!
Habitats and changes to environments
Make shoebox habitats and model changes to polar ice caps with ice.
Make your own food chains and food webs with these easy ideas.
Light Experiments for Kids
Make a light maze to learn about light travelling in straight lines and reflection.
Learn about light and refraction with these direction swapping arrows.
Try one of our simple shadow investigations including drawing around 3D shapes, making a sundial and creating shadow puppets.
Electricity
Learn how to make a simple switch.
Design and build a torch using a simple circuit.
For a bigger project you could light up a street!
Magnet Experiments
Defy gravity with this floating magnet trick!
Forces and Motion
Gravity
Learn about gravity with one of my easy gravity experiments including launching a film canister rocket, a bottle rocket or even a straw rocket!
Air Resistance
Find out about air resistance with a simple egg drop experiment or by making paper spinners.
Friction
Learn about friction by making a friction ramp, a garden teddy bear zip line or slow down a marble run by adding something to increase the friction between the slope and marble.
Materials - Key Stage 2 Science Experiments
Find out which solids dissolve in water with an easy investigation using water, salt, suagr and sand.
Clean up dirty water by filtering. This is a great way to discover how to separate insoluble materials.
Make and separate mixtures using sweets or toys!
Changing States
Learn about changing states by making mint chocolate leaves.
If you fancy some science fun in the kitchen transform cream into butter or egg white into meringue!
Evaporation and Condensation
Learn about evaporation by leaving wet sand outside on a hot day.
Sound
Make a straw flute ( great for learning about pitch ), find out how to see sound with rice and a drum.
Earth, Moon and Space
Learn about space and the solar system with a week long DIY Space Camp.
Do you know of any great Key Stage 2 Science Experiments we've missed?
Last Updated on July 7, 2021 by Emma Vanstone
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