What are those things wiggling in the soil?

We had a look at our worms yesterday! The children were very intrigued. We talked about why worms were good for our soil and what they actually do! We  also discussed how we need to care for them, and observed their tunnels. Today, children were independently going over to the worms, and someone rushed over to me to show me a tunnel! We will continue to observe them, feed them, draw them and write about them.