A friend of mine volunteers at the Nature Center in one of the local parks. They do projects for home schoolers all the time. Some of them sound a lot neater than any I ever got in school. They're currently hatching butterflies and mapping the migration paths of Monarch butterflies.
There are a lot of resources for home schoolers now.
There certainly are lots of resources for home-schooled children today and they seem to be just playing and having fun while they are learning.
The only nature thing I had in public school (many,many years ago) was the milk weed pods and pussy willows the teachers would bring in every year.