2026–27 · Main lesson · Fall 2026

Audit a Worm Habitat and Map the Decomposer Cycle

Adult extension of: Worm Exploration

November 16–20, 2026 · planned

Observe a managed compost-worm habitat and compare bedding, food scraps, and castings. Translate the evidence into one realistic care decision and a matter-cycle diagram.

Curriculum skill focus: Living-thing observation, comparison, gentle care

01 · Learning

Objectives

Describe worms and habitat conditions without harming them.
Connect plant scraps, decomposers, castings, and plant growth.
Choose a care action supported by observed conditions.

02 · Preparation

Materials

Established managed worm bin; small tray of damp bedding; magnifier; spoon or soft-tipped tool; gloves; food-choice cards; moisture/odor/food log; handwashing supplies. Images can replace live specimens.

03 · Practice

Adult project

1
Agree on a brief observation period and roles. Keep the bin shaded and the bedding damp; explain that handling is optional and worms must remain over the tray.
2
Observe body movement and compare recognizable plant scraps with more broken-down material. Record what is visible instead of assuming every dark particle is a worm casting.
3
Check the bin’s bedding moisture, remaining food, and airflow using the care protocol. The facilitator handles any concerning mold, pests, or strongly unpleasant conditions.
4
Sort example additions into suitable, unsuitable, and check first. Use the bin’s actual protocol to decide whether it needs a small feeding, more bedding, or simply more time.
5
Arrange a cycle showing plant material being processed by worms and microbes, nutrients in the compost system, and uptake by growing plants. Explain that not all change comes from worms alone.
6
Return worms promptly to their habitat, record the next care check, clean surfaces, and wash hands. Assign a chosen care or recordkeeping role with clear support.

Evidence & interpretation

What the investigation shows

Compost worms fragment and digest organic material while microbes also drive decomposition. Castings are part of a managed nutrient cycle; a short observation does not measure the full composting rate.

Practical connection

Why this work matters

A living system creates meaningful maintenance and observation work. Shared care can be divided into planning, measuring, recordkeeping, and habitat checks without requiring animal contact.

Participation by choice

Individual access options

Observe a closed bin, live close-up display, or photographs if contact, odor, or movement is uncomfortable.
Use a spoon, magnifier stand, gloves, large-print log, or partner support.
Offer a single condition to check or a full care audit; participants may decline animal handling without losing a meaningful role.

Review & transfer

Reflect on the work

What evidence tells you whether another feeding is needed?
Where do microbes fit in the cycle alongside worms?