This simple water displacement experiment is one of the best science activities we’ve ever done here in my daycare! It was easy, it didn’t cost a thing, and the kids saw with their own eyes what water displacement is all about.
Now, when it comes to science experiments for preschoolers, I like to keep things simple and affordable, using items we already have around the like the house. That’s definitely the case with this water play activity.
We have quite a large collection of stones for play so it was easy to pull this activity together, and the hooligans had so much fun with it!
When I was young, I was fascinated by a fable called The Crow and the Pitcher, a story about a thirsty crow who knew all about water displacement. He dropped stones into a pitcher half-full of water, to raise the level of the water high enough that he could take a drink.
We re-created that story using a few items that we had here at home.
Items needed for your water displacement activity:
- a clear, plastic container
- stones and rocks
- plastic toy
- permanent marker
Conducting our water displacement experiment:
We experimented with a few different containers, and discovered that the one with the largest opening worked best.
We filled our container with water, and I marked the level of the water on the container so we could monitor our progress.
Then I hooked a plastic toy turtle to the top of the container, and the fun began.
The children worked together, dropping the stones into the container.
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