Sprightly brothers S. Rakesh and S. Mukesh, studying in classes VI and VIII in Chennai Middle School, Kutty Street, lapped up a car tyre from a toy, two plastic balls from their house, and leftover batteries to demonstrate how the sun lights up the Earth.

On Thursday, the classrooms of Chennai Middle School on Triplicane High Road were filled with eager students, explaining the workings of the Bernoulli Blower and magnetic fields and generating light from leftover food.

The school was host, according to officials, to close to 120 students and 60 teachers from 10 middle schools and close to 50 high and higher secondary Chennai Schools who participated in the two-day science exhibition.

One of the students who exhibited was A. Priya, who briefly dropped out of school, passed a bridge course, and now attends school again with students of her age. The class VIII student from Chennai Middle School, Jagannathapuram, along with her schoolmates, was briefing visitors on the virtues of medicinal plants such as fenugreek and Tulsi.

As visitors and students scribbling in notebooks walked by, G. Nazeer from CMS, Trustpuram, called out to them from a corner urging them to peek into the periscope he had made. “I was asked to make a kaleidoscope, but I made both,” said the chirpy student.

Students displayed exhibits to demonstrate concepts including heat, electricity, sources of energy, magnetic fields, garbage segregation, mirrors and reflection, among several others.

An official said the Chennai Corporation had worked in collaboration with QED (Quest, Explore, Discover), which trained its teachers in making exhibits, and also displayed some of its own science models. The other models were made by the students with help from teachers who attended the training, the official said.

Uma Mahesh, vice-president, business development, QED, said they had trained 48 teachers working in Chennai Schools, where they were not only familiarised in QED’s science exhibits aligned to the State syllabus, but also trained in creating parallel exhibits back in their schools.

An official said a zonal-level competition was held in February, and winning schools were exhibiting. The exhibition will be on till March 8.

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