3-4 Year Olds

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Fun Science Ideas for 3 and 4 year old girls

3 and 4 year olds is the age range that is often called “preschoolers” in Australia, and it’s such a great age for fun and simple science activities – at preschool or at home!

This is the age that my youngest daughter ‘Bumble Bee’ is right now, and so we’re doing loads of fun science (and STEM) projects that are age-appropriate for preschoolers at our place at the moment.

(We’ll be updating this page with more ideas as we try them, so remember to pop back regularly to find even more! Or you might like to subscribe to receive all our latest ideas via email.)

Fun Science and STEM Activities for 3-4 year olds


Fun 3-4 year old science activities

Fun science ideas for 3 and 4 year old kids

Want even more preschooler science activities?

If you are looking for MORE science ideas for preschool aged kids, you might also like:


Want even EVEN more ideas?

You could check out the ideas on our Science for 1-2 Year Olds page – minor variations can make many of these ideas still fun for an older age group. (My kids always like repeating experiments and activities that they did when they were younger – they just tend to play with it in a different way.)

We also have a Science for 5-6 Year Olds page – kids will likely need help from an adult for most of these ideas though.

All these and MORE are pinned on my Fun Science for Kids Pinterest board.

Which of these science activities do you think your 3-4 year old might enjoy?



Please note…

All kids activities on this blog require attentive adult supervision. Parents and carers will need to judge whether a particular activity is appropriate their child’s age and skill level. Click here for more information.

Fun Science Ideas for 3 & 4 year olds
3-4 year old science activities
Fun Science Activities for 3-4 Year Olds


  1. Wow! There are so many great ideas to visit and try on this page! I’m pinning this so I can come back.

  2. Janise Tavella

    Have you ever considered writing a science ebook or guest authoring on other blogs? I have a blog based on the same ideas you discuss and would really like to have you share some stories/information. I know my visitors would appreciate your work. If you are even remotely interested, feel free to send me an email.


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