I'm always trying to bring 'the world' into the classroom and sometimes it doesn't work out the way I planned it!
We were hosting tilapia fish for two weeks.. then that turned to three weeks. Over an extended weekend the fish got ick and many died. The survivors were quite smelly! They finally moved back home and we moved on as well.
Fungus! Mushrooms don't photosynthesis so they can grow happily in a cupboard. Well at least they 'should' grow happily in a cupboard. Ours did at the beginning, but despite having fearless names from harry potter, they stopped producing after a month. The still sit in teh cupcoar