Observing earthworm locomotion

Apparatus and Chemicals

For each group of students:

Glass sheet (Note 2)

• Earthworms

• For the class – set up by technician/ teacher:

• To collect the worms:

• Spade (Note 1)

• Mustard powder (optional – see Preparation)

• Plastic tub (1 litre plus) plastic tub with small air holes in lid and sides containing potting compost