Mon Prof Augmenté
Compost Bin Layers
A compost bin is filled with layers of wet kitchen scraps and dry leaves or cardboard. Air, water and turning help the bits break down into dark soil.
This picture is part of the full library
Every lesson is open to everyone for 7 days after it is published. This one came out on September 17, 2026: its text stays readable here, and its picture opens with a subscription.
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Age 9: open this week
Browse Age 9
In the picture
- Wet kitchen scraps: fruit peels, an apple core and grass clippings
- Dry material: a torn cardboard piece and dry leaves
- Crumbly dark compost with small air gaps
- A pitchfork lifting and turning the pile
Examples
- Banana peels and apple cores from the kitchen going into the bin.
- Raking dry autumn leaves and tearing up a cardboard box to add on top.
Key takeaways
- Wet and dry layers together break down faster than either one alone.
- Turning the pile lets air in, and a little water keeps it damp like a squeezed sponge.
Carry on in the app
Three questions on this lesson. It has left the free week, so its quiz is for subscribers.
At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.
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