a model of kidney
a suitable still model for science exhibition is volcanos
By your Hands
volcano
non working
don't make windmills or dams.Making something like traffic control system will be spectacular.
working models like electrical ones
maths exhibition
Why waste your time on something that is pseudo- not real science. why not models of early multi-stage rockets- which are available in hobby shops, etc.
You might make a diorama as an environment project for a science exhibition. You could choose a landscape design and create a miniature version in a shoebox or in an aquarium as a display.
Something interesting .
advantages of science exhibition
i m zaid . i prefer the model which is more inventive dont make windmills, dam ok .i prefer you make model like trafic control such that it can solve the problem of city which is densed or some thing inven tive.ok