Books similar to the following can be used with the lessons in the first grade kit.
My Very First Book of Shapes by Eric Carle
The Shape of Me and Other Stuff by Dr. Seuss
The Shape of Things by Dayle Ann Dodds
Gregory, the Terrible Eater by Mitchell Sharmat
The Edible Pyramid: Good Eating Every Day by Loreen Leedy
So Many Circles, So Many Squares by Tana Hoban
School Bus by Donald Crews
Truck by Donald Crews
Whistle for Willie by Ezra Jack Keats
Song and Dance Man by Karen Ackerman
The Very Busy Spider by Eric Carle
The Three Little Pigs by Steven Kellogg
Town Mouse, Country Mouse by Jan Brett