Preschool Science – Sink or Float?

preschool science lesson sink or floatI have done many times with my son but now that he is 3 and has starting asking more complex questions, able to use information to make solid predictions it was way more fun! Using Easter eggs doesn’t simply add novelty, it add another dimension of learning, as we added more items to the eggs to see if the amount would change the result.

  1. Gather your materials. You will need a plastic tub, some plastic Easter egg, tape to cover the holes they have, and a range of items to pack inside. We chose a lego, some feathers, coins, rocks and dry pasta. You will also need some crayons in the same colors as the eggs, a marker and paper to make a prediction and results chart. Preschool Science Lesson
  2. Start by filling your eggs with the contents. Don’t forget to add tape to the holes so water doesn’t get in.Preschool Science Lesson
  3. Make your easy peasy chart. Draw the egg, write what’s in them and have your child decide if they think it will sink or float. Talk about how when they decide they are making a prediction. Ask them why they think each will sink or float.Preschool Science Lesson
  4. Do your experiment. Pop the eggs in the water and discover if it sinks or floats. Preschool Science Lesson
  5. Was the result what you expected? All of ours floated so we opened up the one with rocks in it added more and then it sunk. This was the best part of the whole lesson because my son figured out why it sunk the 2nd time but not the first! Since doing this last week we have “tested” many other things from a match box car ( it sunk) to a sock!  Preschool Science Lesson
  6. We also opened some of the eggs up to see what would happen, and blew air on them too. Some moved some didn’t can you guess why?;) Love that one experiment leads straight to another!  Preschool Science Lesson

What I love about teaching through experiments is that kids grasp things on their own, the true pleasure of making a discovery is obvious on their faces and it makes a mark. They remember and understand  this experience much better than if we simply told them why things sink and float.

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