We went to Mount Coot-tha Botanical Gardens last week for the Far Out Forest Festival, and this idea was inspired by some activities they held for children relating to worms.
We made some pink play-dough, and Finn and Evie rolled out a whole family of worms, and placed them in a their own Worm Farm - a little plastic container (or a cardboard box) previously filled with sticks, grass and leaves.
Then we went into the garden to look for real worms (the compost bin was a good start).
We looked and gently held some worms and talked about how they are important to the health of plants and soil. They breakdown food and plant matter, fertilize and create airways for drainage and aeration of the soil. They have also been around for 120 million years according to Wikipedia.