Remove the base of a paper cup and cut four petals from the hoop. Remove the rim from the base of the second cup. Stick the four petals on the base of the second cup. Give the petals a twist to make them blades. Throw this helicopter from the first floor. It will be a delight to see it come down spinning.
[ Ссылка ] 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 access of quality education to the underprivileged population in India. To facilitate quality in teaching and learning of Science education through workshops, capacity building and resource creation, Tata Trusts have been supporting Muktangan Vigyan Shodhika (MVS), IUCAA's Children’s Science Centre, since inception. To know more about other initiatives of Tata Trusts, please visit www.tatatrusts.org

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