th Blends Worksheet | Printable Grade 1 ELA

This Grade 1 phonics worksheet provides targeted practice with the 'th' consonant digraph. Students build foundational reading skills by brainstorming vocabulary, illustrating concepts, writing sentences, and identifying missing vowels in 'th' words. The multi-modal approach ensures active engagement with early literacy concepts.

At a Glance

• Grade: 1 · Subject: ELA
• Standard: CCSS.ELA-LITERACY.RF.1.3.A — Know spelling-sound correspondences for common consonant digraphs
• Skill Focus: 'th' digraphs and blends
• Format: 1 page · 10 problems · Answer key included · PDF
• Best For: Independent phonics practice
• Time: 15–20 minutes

This single-page resource features four task types to reinforce phonics. It begins with an open-ended brainstorming web for 'th' words. Next, a drawing section allows for visual representation. A sentence-writing block provides contextual application, while the final section includes six fill-in-the-blank spelling challenges where students supply missing vowels for words like "path" and "thumb."

Designed for immediate classroom implementation, this worksheet requires minimal setup:

• Print (1 minute): Generate copies from the PDF. The clean design saves ink.
• Distribute (1 minute): Hand out during literacy centers. Clear instructions allow independent work.
• Review (3 minutes): Check the spelling section using the key, and review creative tasks together.

With under two minutes of prep time, this is perfect for sub plans.

Aligned to CCSS.ELA-LITERACY.RF.1.3.A, this activity requires students to know spelling-sound correspondences for common consonant digraphs. By applying the 'th' sound across multiple contexts, students demonstrate comprehensive phonics understanding. Both standard codes can be copied directly into lesson plans, IEP goals, or district curriculum mapping tools.

Deploy this worksheet during independent practice, following direct instruction on the 'th' sound. It serves as an excellent literacy center activity. As a formative assessment observation tip, monitor students during brainstorming; if they struggle, provide a visual anchor chart to scaffold thinking. Expected completion time is 15 to 20 minutes.

Designed for first-grade students mastering early phonics, this also serves as an intervention tool for second graders. To support differentiation, provide a word bank for students needing help with sentence writing. Pair this worksheet with a decodable reading passage focusing on 'th' words to reinforce the skill.

Mastering consonant digraphs is a critical milestone in early literacy development. This resource targets CCSS.ELA-LITERACY.RF.1.3.A, helping students know spelling-sound correspondences for common consonant digraphs. According to Fisher & Frey (2014), providing students with multi-modal opportunities to interact with new phonics patterns—such as combining visual illustration, spelling, and sentence generation—significantly increases retention and decoding fluency. By moving beyond simple rote memorization and asking students to actively brainstorm and apply the 'th' sound in context, this worksheet builds deeper orthographic mapping. Early readers who consistently practice these specific sound-spelling correspondences demonstrate marked improvements in both reading comprehension and independent writing tasks. This targeted approach ensures that foundational reading skills are firmly established, paving the way for future academic success across all subject areas.