"Raising public awareness of science, engineering and technology does not appear to be important in our universities and science councils... and yet it is," she said in a speech prepared for delivery at the launch of the National Science Week initiative in Soweto.

Pandor said exposing youth to scientific careers would enhance their chances of becoming "scientists of tomorrow".

More than 80 sites around the country would run different science related activities from Monday to Saturday as part of the initiative.

The activities included teacher and learner workshops, open days, public lectures, seminars, career exhibitions, learner outreach activities and tours of the country's major science facilities.

Pandor said the activities would be aimed at exposing youth to the wonders of science.

"I challenge you to learn and make sure that you excel in the two gateway subjects... mathematics and physical science."

She also urged the youth to take part in science expeditions and related Olympiads and competitions.

"That is how you awaken a desire to become a scientist," she said.

The theme for this year's' celebration was 'the role of science in economic development'.