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Float or sink


Float or sink

What to do with this activity?

Does it seem easier to float in a calm sea rather than in a swimming pool? It’s because sea water is salty and everything floats better in salty water.  Do a science experiment to prove it.

1. Fill a glass with luke warm water and gently put an unbroken raw egg into it. The egg will sink immediately.
2. Fill another glass with warm water, add salt and stir until no more salt will dissolve.
3. Gently put a second egg into the water and watch it float. This is because salt water is heavier than clear water and supports things better.  

Do other little experiments at home to see what floats and what sinks. Write down what you discover like a scientist. 

Ask a question like, “Will a paper clip float or sink?”. Predict or make a guess as to what will happen - that's your "hypothesis". Now carry out the experiment. Observe and watch what happens. Was my hypothesis correct? Did it sink or float? 


  • Why am I doing this?

    Learning to write should be fun. It’s important that children know that writing is a fun and useful. By fitting it into everyday activities, like drawing, writing notes and birthday cards children will get used to holding a pencil and learning to write properly.

  • How can I do more?

    Encourage your child to write and draw  - on outdoor walls with chalk or in the sand at the beach. Give them picture mazes or puzzles to fill out – join the dot puzzles are great for their hand eye coordination.

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