Photo: Gregor Richardson
Later, they had the opportunity to test the efficiency of their model homes using infrared cameras to map heat loss.
The theme of this year's hui was energy - one of the key issues of the 21st century.
Pupils from 12 Dunedin primary schools gained an insight into how energy touches every part of our lives and were able to engage with the different forms of energy and their use in society.
The pupils also looked at sustainable energy generation and methods for energy conservation.
University of Otago physics lecturer Dr Esther Haines explained how energy, such as solar energy, was generated and how it could be transformed into electrical energy.
