Build reading fluency with purpose. These Reading Fluency Passages for First Grade and Kindergarten are mystery reading passages where students read out loud, solve a challenge, and draw their response. With 75 differentiated passages across 5 activity types and 3 difficulty levels, this pack keeps fluency practice fresh and engaging all year. Perfect for guided reading groups, literacy rotations, or intervention.

Students naturally reread because they want to crack the code, spot the lie, or solve the mystery — no timers or pressure needed. With 75 passages, a built-in assessment page, and a buddy read activity, this isn't just fluency practice — it's fluency practice they actually want to do.

Key Features:

• 75 Detective-Themed Fluency Passages: Every passage includes tricky words to pre-read, a task to solve, a written response, and a draw box — all on one page, print and go.
• 5 Activity Types: Guess the Animal, Spot the Lie, Mini Mystery, Crack the Code, and What Happens Next. Five different challenge formats stop fluency practice from getting repetitive.
• 3 Levels of Differentiation: Level 1 uses short sentences with CVC words and sight words. Level 2 steps up to blends, digraphs, and CVCe words. Level 3 includes vowel teams, suffixes, and compound sentences. Every section has 5 passages at each level so you can match every student.
• Built-In Rereading: Students naturally reread because they want to check clues, find the lie, or crack the code — no timers or pressure needed.
• Assessment Page: A printable student assessment page to track accuracy, rate, and prosody over time.
• Buddy Read Activity: A partner reading page where students take turns reading and giving feedback.
• Answer Keys: One page per section included at the back of the resource.
• Teacher Guide: Clear instructions on how to use each section and how to choose the right level for each student.

What's Included:

• Guess the Animal — read the clues, guess what it is
• Spot the Lie — one fact is fake, find it
• Mini Mystery — read the clues, solve the case
• Crack the Code — the sentences hide a secret word
• What Happens Next — the story stops, you finish it
• Student assessment page
• Buddy read activity page
• Answer keys for every section
• Teacher guide

Perfect for:

• Reading Centers / Rotations
• Explicit instruction and whole class
• Decodable Phonics programs
• Revision
• Intervention
• Homework programs

Reading Fluency Detectives gives your students fluency passages they actually want to read. Print, hand out, and let your little detectives get solving.