The national week - the first of its kind in this country involving primary school science - was organised by the New Zealand Association of Science Educators and the Royal Society of New Zealand.
Cries of delight from youngsters at Andersons Bay School greeted some "lava-making" experiments organised for the science week by a relieving teacher, Tiff Stewart, who has an environmental science background.
By adding salt to a brightly-coloured mixture of water and vegetable oil, pupils could create their own lava lamp-style displays.
Principal Hamish McDonald said the science week, which ends on Saturday, was promoting "understanding and awareness" of science activities, and Ms Stewart's sessions were "sparking enthusiasm" among pupils.
In Otago, many schools are taking part in a wide range of activities, including workshops for teachers after school, a session on "engaging with secondary schools" and events involving exploring forests, chemistry fun and science ambassadors.
Victoria Rosin, the southern South Island co-ordinator for science week activities, said the aim was to enhance science teaching, support primary school teachers and boost their confidence in science teaching.
A highlight comes on Saturday when the Otago science week host, the University of Otago's New Zealand Marine Studies Centre and Aquarium at Portobello, runs a series of free public sessions, from noon to 3.30pm, starting with a chance to explore the coastline at low tide.
Otago chemistry department professional practice fellow Dr Dave Warren, who took part in a teacher chemistry workshop yesterday, said the science week was helping boost professional development among primary teachers.
