I've been wanting to add some things to my TPT store over the holiday break, and I've found that my lesson plan bundles seem to be selling more than anything else. So, I decided to edit and update the Houghton Mifflin science lesson plans that I created when I returned to first grade three years ago. I'll be interested to see how/if they sell. I'll update as soon as I have them finish and posted!
UPDATE: Houghton Mifflin Science Unit A, Chapter 1 is now posted on TPT. Check it out!