Non-Fiction Readers in First Grade

I am a first grade teacher who enjoys integrating science into reading and writing as often as possible. I am excited about the fact that there are more low leveled and easy reader non-fiction texts available now. The children love learning new facts and information. It is especially nice when they can read about the topics they are intersted in, on their own. I love it when a child tells me about something they are interested in or tells me a story about something and I can go get a book for them to read more about the topic. They are so proud when they can do it on their own.