My youngest daughter has been home schooled since October 2009. As part of her schooling, we joined the Junior Landcare pumpkin challenge. You are sent a packet of Yates Atlantic Giant pumpkin seeds and have to weigh in monthly and also submit pictures of your pumpkin. Unfortunately I don't think she will be a contender for biggest pumpkin this year as so far we only have flowers but no pumpkins yet. However, she has learnt about bees and pollination, seasonal eating and is having fun as well. Thankfully grasshoppers don't seem to like pumpkin leaves. One of our observations has been that there we haven't seen any cicada shells this season which my kids usually have a collection of.
I have now sent in my application to join my local Landcare group to be more involved in caring for the environment beyond our boundary fence. I'm not sure what kinds of activities this involves but it something to look forward to.