These are long special balloons with a narrow mouth with a knot on one end. You need to insert a straw in the mouth and then inflate the balloon. It will become almost one meter long. Then leave the balloon outdoors and it will take off like a rocket making a whizzing sound!
http://www.arvindguptatoys.com/toys/Rocketballoon.html This work was supported by IUCAA and Tata Trust. This film was made by Ashok Rupner TATA Trust: Education is one of the key focus areas for Tata Trusts, aiming towards enabling acce
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