World Environment Day / Jar Terrarium Ecosystems
Jar Terrarium Ecosystems
Children layer gravel, charcoal, soil and small plants in a clear jar to build a mini ecosystem they can watch recycle its own water over the following weeks.
How to run it
- Put a layer of small pebbles in the bottom of each jar for drainage.
- Add a thin layer of activated charcoal, then a deeper layer of potting mix.
- Plant one or two small cuttings or moss and add a few decorative stones or bark pieces.
- Mist lightly, close the lid and place the jar in bright, indirect light.
- Check back each week to spot condensation and talk about the water cycle inside.
You will need
- clean jars with lids
- small pebbles
- activated charcoal
- potting mix
- small plants, cuttings or moss
- spray bottle
- spoons
Make it easier or harderYounger children can use wide plastic containers and large scoops; older children can keep a weekly observation diary.
SafetyUse plastic jars with younger children, wear gloves with potting mix and wash hands well afterwards.
My Time Our Place · Outcome 4, Outcome 2Children build and observe a living system, developing responsibility and curiosity as involved learners.
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