Second Grade Stories (a treasure trove of great information) and is also a seller on TpT. You should definitely visit her store also called Second Grade Stories, which is full of amazing nonfiction mini units, holiday and literacy activities.
Lisa's adorable Squirrel-Nonfiction Mini Unit is on sale right now for $1 off! It's over 60 pages of great resources and materials that will keep your students engaged for sure! The price is NUTS (sorry, I couldn't resist) for what you'll be getting!