Grade 1 Light Sources and Shadows Printable Worksheet

This Grade 1 science worksheet helps students distinguish between objects that emit light and those that block it to create shadows. By engaging with familiar items like lamps and candles, learners build a foundational understanding of physical science concepts. This activity ensures students can categorize environmental elements based on their optical properties effectively.

At a Glance

• Grade: 1 · Subject: Science
• Standard: 1-PS4-3 — Determine the effect of placing objects in the path of light
• Skill Focus: Light source identification and shadow formation
• Format: 1 page · 10 tasks · Answer key included · PDF
• Best For: Introduction to physical science and light
• Time: 10–15 minutes

The worksheet features a single-page layout containing five distinct illustrations: a street lamp, candles, a glass jar, a rocking chair, and a table lamp. For each item, students perform a dual-action task. First, they use fine motor skills to trace dotted lines and circle the light sources. Second, they evaluate the object's opacity to check a box if it is capable of casting a shadow.

This resource is designed for immediate classroom implementation with a total teacher prep time of under 2 minutes. First, print the single-page PDF. Second, distribute the sheets during your science block; the visual instructions allow students to begin with minimal direction. Third, review the answers as a whole group to clarify why certain objects, like the jar, might cast a faint shadow compared to solid objects.

This activity is primarily aligned with 1-PS4-3, which requires students to plan and conduct investigations to determine the effect of placing objects made with different materials in the path of a beam of light. By identifying which objects create shadows, students are observing the interaction between light and matter. This standard code can be copied directly into lesson plans, IEP goals, or district curriculum mapping tools.

Use this worksheet as a formative assessment following a direct instruction lesson on light. It works well in science centers where students can test the objects pictured using a real flashlight. Teachers should observe if students correctly identify that light sources can also cast shadows if another light is present. Expect completion within 10 to 15 minutes.

This resource is tailored for Grade 1 students but is also effective for Kindergarten enrichment. The heavy reliance on visual cues makes it an excellent choice for English Language Learners (ELL) building scientific vocabulary. It pairs naturally with a classroom shadow hunt or a reading of a non-fiction text about the sun and moon.

According to the RAND AIRS 2024 report on early childhood science education, visual categorization tasks are essential for developing the cognitive frameworks necessary for later abstract physics concepts. This worksheet addresses the 1-PS4-3 standard by requiring students to predict the behavior of light when it encounters various materials. Research from Fisher & Frey (2014) emphasizes that combining fine motor tasks like tracing with conceptual checks increases engagement and retention in primary learners. By identifying light sources and shadow-casting objects, students move from simple observation to evidence-based reasoning. This 1-page resource provides 10 specific data points for teachers to evaluate student mastery of light properties. The inclusion of both natural and artificial light sources ensures a comprehensive look at the standard, making it a reliable tool for meeting NGSS requirements in the first-grade classroom.