Ending Sounds s/es & ed Worksheet | Essential Grade 1

This comprehensive phonics worksheet helps students master the auditory discrimination of inflectional endings, specifically focusing on the various sounds of final -s, -es, and -ed. By identifying the "odd one out" in pronunciation sets, students develop a keen ear for voiced and unvoiced consonants. This resource ensures students can accurately distinguish between /s/, /z/, and /iz/ sounds, as well as /t/, /d/, and /id/ endings.

At a Glance

• Grade: 1 · Subject: ELA / Phonics
• Standard: CCSS.ELA-LITERACY.RF.1.3.F — Read words with inflectional endings to distinguish phonetic variations
• Skill Focus: Auditory discrimination of ending sounds
• Format: 3 pages · 35 problems · Answer key included · PDF
• Best For: Phonics assessment or ESL pronunciation practice
• Time: 20–30 minutes

What's Inside: This 3-page PDF contains 35 multiple-choice questions designed to test phonetic awareness. The first 25 questions challenge students to find the word with a different final "s" or "es" sound among four options. The final 10 questions transition to the "ed" suffix, requiring students to categorize past-tense endings into /t/, /d/, or /id/ groups. The clear, repetitive structure allows students to focus entirely on the sounds of the words rather than complex instructions.

Zero-Prep Workflow

• Print (1 minute): Select the 3-page PDF and print enough copies for your literacy block or small group session.
• Distribute (30 seconds): Hand out the worksheets as a quiet bell-ringer or a formal formative assessment to gauge mastery of inflectional endings.
• Review (5 minutes): Use the included answer key to quickly grade the 35 items or review the most challenging phonetic pairs as a whole class.

This resource is a perfect fit for emergency sub plans because it requires no teacher explanation and provides a high volume of focused practice.

Standards Alignment
This worksheet aligns with `CCSS.ELA-LITERACY.RF.1.3.F`: "Read words with inflectional endings." It specifically targets the phonetic shifts that occur when suffixes are added to base words. Both standard codes can be copied directly into lesson plans, IEP goals, or district curriculum mapping tools.

How to Use It
Use this worksheet during the "You Do" phase of a gradual release lesson on plural and past-tense endings. It serves as an excellent formative assessment tool; teachers should observe if students are whispering the words to themselves, which indicates active phonetic processing. Expect completion within 20 to 30 minutes depending on reading fluency.

Who It's For
While designed for Grade 1 students mastering foundational reading skills, this resource is highly effective for ESL/ELL learners of all ages who struggle with the nuances of English ending sounds. It pairs naturally with an anchor chart displaying the rules for voiced and unvoiced endings.

Research from Fisher & Frey (2014) emphasizes that auditory discrimination is a precursor to reading fluency and spelling accuracy. This worksheet applies those principles by forcing students to isolate the final phoneme in a variety of linguistic contexts. By engaging with 35 distinct items, students move beyond rote memorization of rules into phonetic application. According to the Fisher & Frey framework, repeated exposure to these inflectional variations helps solidify the orthographic mapping required for long-term literacy success. The inclusion of both plural and past-tense markers ensures a holistic approach to word study that aligns with modern evidence-based reading instruction. This tool provides the necessary volume of practice to move students toward mastery of CCSS.ELA-LITERACY.RF.1.3.F in a structured, measurable format.