Grade 1 Science — Printable No-Prep Melting Worksheet

This science worksheet helps first graders understand the concept of melting through a simple cause-and-effect activity. Students will observe a set of objects and predict which ones will melt when exposed to the sun's heat, reinforcing the principle that sunlight produces thermal energy that can change the state of matter.

At a Glance

• Grade: 1 · Subject: Science
• Standard: K-PS3-1 — Observe and determine the effect of sunlight on different materials.
• Skill Focus: Cause and Effect, States of Matter (Melting)
• Format: 2 pages · 2 problems · Answer key included · PDF
• Best For: Independent practice, science centers, or a quick formative assessment.
• Time: 5–10 minutes

What's Inside

This two-page resource contains a worksheet and answer key. The main task asks students to circle objects that melt in the sun. A follow-up question prompts them to write what ice becomes when it melts, solidifying their grasp of the concept.

Zero-Prep Workflow

Designed for immediate use, this worksheet requires minimal teacher prep. The entire workflow is exceptionally efficient.

• Print (30 seconds): The resource is a single printable page plus an answer key.
• Distribute (60 seconds): Hand out for independent work at desks or in a science station.
• Review (60 seconds): Use the clear, visual answer key for a quick whole-class review or individual check.

Its simple format makes it a perfect, reliable resource for substitute plans.

Standards Alignment

This worksheet directly supports the foundational principles outlined in Next Generation Science Standards (NGSS). The primary alignment is with K-PS3-1, which involves observing the effect of sunlight on surfaces. It reinforces this key kindergarten concept for first graders, building a strong foundation for understanding energy transfer. The standard code can be copied directly into lesson plans.

How to Use It

Use this versatile activity as a warm-up before a lesson on energy or as an exit ticket afterward to assess comprehension. For formative assessment, note which objects students circle; this can reveal misconceptions about melting versus other changes. The exercise takes 5-10 minutes, making it an efficient check for understanding.

Who It's For

Designed for first-grade students, the visual, low-text format is accessible to early readers and English language learners. It pairs well with a hands-on experiment where students place an ice cube in a sunny spot and another in the shade to observe the difference directly.

This worksheet provides focused practice on NGSS standard K-PS3-1, helping students make evidence-based observations about the effects of sunlight. By asking students to predict which items will melt, the activity engages them in the scientific practice of identifying cause-and-effect relationships—a fundamental skill for scientific literacy. This approach aligns with findings from the RAND AIRS 2024 report that emphasize the importance of discrete skill practice to build complex scientific reasoning. The task requires students to connect the abstract concept of the sun's energy to a tangible outcome (melting), reinforcing the core idea that sunlight warms surfaces and can cause changes in materials. This simple yet effective exercise serves as an accessible entry point for young learners into the domain of physical science, setting the stage for more complex investigations into energy transfer.