This kindergarten emergent reader will align perfectly with your science push and pull unit. It is a DRA level 1. At my store, you will find a similar book written in a level 2/3, and another written in a level 4, (links below) so you can differentiate the same content for your kindergarten students who read at varying levels. You can save money by purchasing all 3 readers in the bundle.
Differentiated Emergent Readers: Things I Push or Pull (Levels 1, 2/3, &4)
Emergent Reader: Things I Push or Pull (DRA Level 2/3)
Emergent Reader: Things I Push or Pull (DRA Level 4)
For more emergent readers, games, activities, and printables, please visit my store at http://www.teacherspayteachers.com/Store/Learning-Should-Be-Fun