Suffix -er and -ness Worksheet | Essential Grade 3 Grammar

Mastering suffixes is a cornerstone of vocabulary development in early elementary grades. This Suffix -er and -ness worksheet provides students with targeted practice in converting root words into nouns that describe people or states of being. By applying these morphological rules, learners enhance their reading comprehension and spelling accuracy simultaneously.

At a Glance

• Grade: 3 · Subject: English Language Arts
• Standard: CCSS.ELA-LITERACY.L.3.4.B — Use suffixes to determine the meaning of new words formed from roots.
• Skill Focus: Morphology: Suffixes -er and -ness
• Format: 1 page · 10 problems · Answer key included · PDF
• Best For: Independent grammar practice and literacy centers.
• Time: 15–20 minutes

This single-page PDF features a word bank containing twelve base words, such as "kind," "teach," and "sick." Students must select the appropriate root and apply either the -er or -ness suffix to correctly complete ten context-heavy sentences. The worksheet includes a clear example and an integrated word bank to support spelling, alongside a full answer key for rapid grading or student self-correction.

Skill Progression

• Guided Practice: The worksheet begins with a worked example, "forgiveness," modeling how the root "forgive" transitions into a noun describing a state.
• Supported Practice: Students use the provided word bank to identify roots that fit the semantic context of sentences, reducing cognitive load while focusing on suffix application.
• Independent Practice: Learners must independently determine whether -er (person/agent) or -ness (state/condition) is required to resolve the sentence's meaning.

Standards Alignment

This resource is directly aligned with CCSS.ELA-LITERACY.L.3.4.B, which requires students to determine the meaning of the new word formed when a known affix is added to a known word. By practicing with -er and -ness, students learn to distinguish between agents (teacher, gardener) and abstract nouns (blindness, kindness).

How to Use It

Use this worksheet as a follow-up to a direct instruction lesson on suffixes. It is particularly effective as a "Quick Check" or formative assessment during the independent practice portion of a literacy block. Teachers can observe students as they work to ensure they understand the spelling change in "laziness" (y to i), providing a perfect opportunity for a small-group correction tip.

Who It's For

This worksheet is designed for Grade 3 students but is also suitable for Grade 2 enrichment or Grade 4 review. It provides excellent support for English Language Learners (ELLs) who are developing an understanding of English word parts.

Research by Fisher & Frey (2014) emphasizes that morphological awareness—the ability to recognize and manipulate word parts like the suffixes -er and -ness—is a significant predictor of reading success in the upper elementary grades. This Grade 3 worksheet aligns with the "Science of Reading" by explicitly teaching how suffixes function as meaningful units of language. By engaging with CCSS.ELA-LITERACY.L.3.4.B, students move beyond rote memorization toward a generative understanding of vocabulary. The ten structured tasks within this resource provide the repetitive, high-utility practice necessary for students to internalize these patterns and apply them to complex texts they encounter in daily reading. This evidence-based approach ensures that learners are not just filling in blanks but are building the cognitive frameworks required for advanced linguistic proficiency and long-term literacy growth, making it a valuable addition to any standards-based curriculum or intervention toolkit.