Printable Grade 1 Articles Worksheet: A vs. An

This Grade 1 grammar worksheet provides a focused and efficient way for students to master the use of indefinite articles. By engaging with 15 carefully constructed sentences, learners practice the fundamental rule of choosing between 'a' and 'an' based on the initial sound of the following word, building automaticity for fluent writing.

At a Glance

• Grade: 1 · Subject: English Language Arts
• Standard: CCSS.ELA-LITERACY.L.1.1.H — Use determiners including the articles a and an correctly.
• Skill Focus: Indefinite Articles (A/An)
• Format: 1 page · 15 problems · Answer key included · PDF
• Best For: Independent grammar practice or sub plans
• Time: 10–15 minutes

What's Inside

This single-page PDF features a clean layout with 15 sentences. Students circle the correct indefinite article ('a' or 'an') for each. The vocabulary provides a solid challenge. A full answer key is included for easy grading or self-correction.

Zero-Prep Workflow

This resource offers a true zero-prep workflow. Print: The single-page PDF takes seconds to print. Distribute: Use it as a morning warm-up or transition activity. Review: The answer key allows for a quick 5-minute class review or self-check. Total prep time is under two minutes, perfect for sub plans.

Standards Alignment

This worksheet directly aligns with CCSS.ELA-LITERACY.L.1.1.H, which requires students to use determiners like articles correctly. It provides targeted practice on applying the phonetic rule for 'a' and 'an'. The standard code can be copied directly into lesson plans or curriculum maps.

How to Use It

Use this for independent practice after a mini-lesson on articles to check for understanding. It's also an effective homework assignment or a quick review in a writing center. As a formative assessment tip, observe if students are sounding out the next word, which shows they are applying the rule.

Who It's For

Designed for first-grade students, this worksheet also supports second graders needing review and English Language Learners (ELLs) mastering grammar. For extra support, pair it with an anchor chart of vowel and consonant sounds. It's a great follow-up to a shared reading where articles were identified in context.

Effective grammar instruction relies on providing students with repeated, targeted practice on discrete skills. This worksheet, aligned with CCSS.ELA-LITERACY.L.1.1.H, offers precisely that for indefinite articles. It gives first graders the structured repetition needed to internalize the phonetic rule for using 'a' versus 'an'. According to research on effective literacy practices, such as the findings discussed by Fisher & Frey (2014), explicit skill instruction combined with opportunities for independent application is critical for building foundational abilities. By completing the 15 focused tasks, students move beyond rote memorization toward automaticity, a key component of writing fluency. This print-and-go resource provides the necessary practice for students to correctly use determiners in their own speaking and writing, a skill essential for clear communication.