It was an early morning Sydney show in the vein of Cartoon Corner and Super Flying Fun Show- cartoons interspersed with competitions, skits and educational segments of interest to kids.
There’s some info in this wiki article (last paragraph in “overview”). The 1971 date is wrong. I think I remember reading that change took place mid way through 1970 and there was some viewer backlash when Rosemary Eather was replaced.