I created this unit from activities I did when I taught 4th grade science. I added some activities for younger grades as well. I would do the booklet for 1st and 2nd and read it together. The single page is good for 3rd and 4th. Many animals in winter units create a misconception that hibernating and migrating aren't adaptations which they are. This unit teaches the correct concepts and terms.
Vocab cards - essential to front load vocab especially in younger grades
2 Levels of sorting activities
Where do animals hibernate?
Animals in Winter Can Have Are Need
Comprehension Free Response
I hope this helps you teach Adaptations!