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The new $70,000 interactive technology will help the trust explain to the region’s pupils what is going on inside them.
The trust’s mobile classroom was parked at John McGlashan College yesterday.
Through various fundraising efforts, the trust was recently able to rewire the classroom and install an interactive screen that can show pupils the detailed workings of the human body.
Ms Sinclair said they could learn a lot more this way than with the light-up mannequin of days past.
The trust was always seeking more volunteer trustees, she said.
"Without them, Harold and I wouldn’t be able to visit almost 6500 children in Otago."
The trust has delivered the programme to the area since 1996.
With mascot Harold the Giraffe at the helm, it focuses on obesity, substance use, mental wellbeing and bullying.