 |
The excretory system is a passive biological system that removes excess, unnecessary materials from the body fluids of an organism, so as to help maintain internal functioning and prevent damage to the body.
This is a teaching aid representing the different parts and functions of excretory system of human beings prepared by me. It was used to teach the students of std X.
Creative teaching aid with all the parts labelled properly... One suggestion models give the wrong conception of size so we teachers should tell the students
ReplyDelete