I use this activity as a beginning activity to get kids excited about fractions and over their fear of fractions. I believe it was very successful! I've not had anyone of my 90+ confused about what numerators and denominators are. We also covered addition and subtraction (a tasty part) which has made that part of our study very easy.
My name is Katie and I am also an Aussie teacher (from Adelaide) who sells files on TPT. Did you know there is another site similar to TPT that is only for Aussie educators? www.teachersmarketplace.com.au
It started 2 years ago and has been really taking off. I'm just letting you know because I've been selling on there too and it doesn't hurt to spread the word! I'm sure the buyers from there would really appreciate your resources too!