Yes! Foundations C exposes students to different genres of controlled texts with the set of 8 non-fiction readers and the two short chapter books, Miles and Jax and Miles and Jax: Master Planners. All of these readers are scheduled into the lessons with comprehension questions and activities based on the reading.
Note for anyone with the first edition of the Foundations C Teacher's Manual:
The original Foundations C Teacher’s Manual does not schedule the Miles and Jax books, but you can still use them! Each chapter is designed to be read after completion of a specific lesson in Foundations C, and every word in each chapter can be sounded out successfully using phonograms, spelling rules, and language concepts that have been taught by that point in Level C.
Miles and Jax
Chapter 1: Miles and Jax - after Lesson 85
Chapter 2: Miles and Jax Go to the Playground - after Lesson 90
Chapter 3: Miles and Jax Clean Up - after Lesson 95
Chapter 4: Miles and Jax Go Camping - after Lesson 100
Miles and Jax: Master Planners
Chapter 1: Miles and Jax Solve a Crime - after Lesson 105
Chapter 2: Miles and Jax Build a Treehouse - after Lesson 110
Chapter 3: Miles and Jax Make a Surprise - after Lesson 115
Chapter 4: Not a Mere Cat - after Lesson 120