"Readers Have Big Jobs to Do: Fluency, Phonics, and Comprehension Grade 1" is a textbook published by Heinemann in 2015 as part of the Lucy Calkins series. Authored by Havilah Jesperson and Lindsay Barton, this trade paperback book is designed for elementary school students in 1st grade. With a focus on teaching methods and materials related to reading and phonics, this book provides valuable insights and strategies for developing essential reading skills in young learners. The book covers various aspects of literacy such as fluency, phonics, and comprehension, making it a valuable resource for educators looking to improve literacy levels in their students.