Introduce your toddler to the world of science with fun and easy science activities designed for 2 to 3-year-olds. These hands-on science activities for toddlers explore basic scientific concepts through sensory play, observation, and simple experiments.

Why Science for Toddlers?
Toddlers are naturally curious and ready to explore their world. At this age, science is all about engaging their senses, sparking questions, and observing changes in a fun, playful environment. Simple experiments can help toddlers understand cause and effect, while offering opportunities to learn through touch, sight, sound, and more.
💡 You can also explore preschool science projects here for additional ideas.
Let Your Toddler Discover Science on Their Own
These activities are perfect for toddlers to explore with little to no adult assistance. They encourage curiosity and help build a foundation for scientific thinking.
Note: 🛑 Adult supervision is still required at all times.
Bubble Play: Make a homemade bubble mixture and let your toddler explore the magic of bubbles—perfect for learning about air and pressure.

Colorful Ice Cube Play: Freeze colored water in ice cube trays and watch your toddler explore melting ice and color mixing.
Frozen Dinosaur Eggs: Freeze small plastic dinosaurs inside ice cubes and let your toddler discover how ice melts.
Fizzing Dinosaur Eggs: Mix baking soda and vinegar to create a fizzing chemical reaction toddlers can explore.
Sink or Float: Explore which items float and which sink in water, introducing buoyancy and basic physics.
Shadow Play: Use a flashlight to create and explore shadows, helping toddlers understand light and shape.
Volcano Eruptions: Create a baking soda volcano eruption with food coloring for an exciting chemical reaction.
Rock Experiment: Collect different types of rocks from the yard or a park, and let your toddler explore the texture and shape of each one. You can also do a “scrub and shine” activity where they clean the rocks with a toothbrush and water.
Sound Exploration with Pots and Pans: Create a mini drum set using pots, pans, and wooden spoons. Let toddlers tap and explore how sound changes when they tap on different objects.
Rainbow in a Bag: Make a mess-free rainbow in a bag, introducing color mixing and liquid properties.
Explore Toddler Science Through Collaborative Play
These activities are designed for you and your toddler to enjoy together, encouraging shared learning and discovery.
Playdough Bug Life Cycles: Create a butterfly using playdough and introduce the concept of life cycles.
Nature Rubbings: To explore textures in nature, collect leaves, bark, and rocks and make rubbings with crayons.
Magnetic Sensory Bottles: Create a magnetic discovery bottle to introduce the concept of magnetism.
Nature Sensory Bottles: Collect natural items like leaves and twigs to explore through sensory bottles.
Popcorn Science: Make homemade popcorn and talk about the science behind how heat makes kernels pop.
Water Play with Different Containers: Let your toddler experiment with pouring and measuring water in different containers.

Magnet Exploration: Give your toddler a set of magnets and let them explore what items around the house are magnetic and which aren’t. This helps teach them about magnetism in a hands-on way.
For more easy science projects for younger kiddos, check out…
Science for Toddlers to Observe Over Time
These experiments are perfect for observing over several days, allowing toddlers to track changes and make new discoveries.
- Re-grow Lettuce: Cut off the top of a lettuce head and place it in a jar of water to watch it regrow.
- Celery and Food Coloring: Place celery in colored water to observe how color travels through the plant.
- Growing Flowers: Plant quick-growing flowers and observe them as they bloom, teaching about plant growth.
- Germinating Seeds in a Jar: Get a fascinating view of seeds and their life cycle as they grow from start to finish.
- Build a Simple Bird Feeder: Use a pinecone, peanut butter, and bird seed to make a simple bird feeder. Hang it up and observe the birds that come by to visit. It’s a great way to talk about animals and nature.
- Make a Simple Rain Gauge: Create a homemade rain gauge by placing a plastic bottle upright outside and marking the water level with a permanent marker. Track the rain over the next few days!



Printable Preschool Pack
Get ready to explore this year with our Preschool STEM Bundle! Or grab the individual packs.
What’s Included:
There are 22+ fun preschool themes. This is an ” I can explore” series! You’ll find both seasonal and non-seasonal themes appropriate to preschool learning throughout the year.
Each unit contains approximately 15 activities, with instructions and templates as needed. Hands-on activities are provided to keep it fun and exciting. This includes sensory bins, experiments, games, and more! Easy supplies keep it low-cost, and book suggestions add learning time.
















