I mentioned last week that Jack and Sarah have been asking a lot about our rubbish lately. Even though we have had a compost bin for about three months now and they help to take out the scraps, Jack and Sarah have never really asked how it worked. Until recently.
“Mummy, why do we compost?” “What happens in the compost bin?”
There was our question of inquiry… What happens in the compost bin?
Today we made a mini compost bin so we could watch the process of decomposition. We saved an apple core, pear core and a little slice of pumpkin.
The kids were very excited and full of questions. They carefully filled the containers with dirt from the garden and added a little water. The poor pumpkin piece got quite the watering so it will be interesting to see how the water affects the rate of decay.
I realised when the kids and I were talking, that they really have no concept of time. We were talking about how long they thought the food would take to decompose. Jack thought, three hundred days for the apple, 400 for the pumpkin and 500 days for the pear.
And don’t you just LOVE the little picture of him scratching his head and contemplating…”hm”.
Now Sarah. Well she thought the apple would take 1 billion days and 6000 for the pear. Love that girl. Seriously, no concept of time. We started a little tally in Jack’s workbook so we’ll just wait and see how long each takes.
The container also has three thermometers so the kids can record the temperature of the soil. I have no idea how the temperature changes as food decomposes so I am interested to see what happens too.
Jack and Sarah have checked on their compost container about 400 times already hoping to see them disappeared (even though Sarah predicted it would take a billion days).
I also got the kids to take a picture of each food. I’m hoping they’ll want to take another picture each day as each piece decomposes. I thought the photos would make a great time-lapse video of the whole process.
So that’s the start of a new inquiry. I think this one is going to be really interesting.
Jack and Sarah are using this See Through Compost Container