Water displacement – Leakproof bag

We worked on Water displacement, Leakproof bag – to understand how plastic bag holds water intact and in comparison with foam cup leakage 

Things needed 
Glass bowl
Plastic cup 
Ziplock bag- make sure it has no tear 
Sharp pencils 
Foam cup 

We did experiment in our Lego table which has water drain ( easy to clean mess ) 

Displacement- she learnt how water is spilled out based on weight added. Heavier the object more the water displaced 

Leakproof bag- we verified the bag with water does not leak. Then she started inserting pencils one by one she found bag does not leak. We compared how different objects react to same experiment with a foam cup!

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