Happy New School Year! Below is more information about the Geodes library, which are the books that have been designed to support Fundations. You might want to check them out and contact them before considering purchase.
From their website:
“The Geodes library allows students to learn how to read while reading to learn.
With Geodes, students will have access to carefully designed texts that reinforce learned phonics patterns while supporting students in Grades 1 and 2 as they learn rich content and vocabulary.