Heat, Light or Sound

Start with something students can look at or think about: a photo, a short video, a jar on the windowsill, or a question like "what do you already know about light sources?" Then let them work through the worksheet on their own or with a partner, keeping a word bank or anchor chart in view so the vocabulary stays available. When you review, ask students how they knew, and let them point to the part of the diagram or reading that told them. These light sources worksheets work well as a lead in before an investigation, as a way to capture what students noticed afterward, or as review before an assessment.

These light sources worksheets for 1st grade give students a clear, visual way to work through one of the big ideas in energy sound and light. Students label diagrams, sort and classify examples, read short explanations, and answer questions that ask them to say why, not just what. Each page keeps the science vocabulary front and center so students leave with the words they need to talk about light sources accurately. Working through light sources on paper gives 1st grade students something concrete to hold onto before, during, or after the hands on part of a lesson.

This worksheet is designed for 1st Grade students (Ages 6-7), aligned to NGSS standard 1-PS4-2. It can also be used as review for early students at the next grade level or as an introduction for advanced students.

Yes. This worksheet works for homeschool, classroom, and tutoring settings. Print individual pages for targeted practice, or print the full set as a packet. Works great as a morning warm-up, independent center activity, or fast-finisher task.

First graders learn to distinguish between natural and human-made sources of light and to understand that all light comes from a source that produces energy. They explore examples from the sun and stars to candles and screens, building awareness of how much light shapes their daily experience.

Light sources are typically introduced in Grade 1 during a physical science unit on energy, sound, and light. Teachers often use darkened rooms or blackout tents so students can dramatically observe the difference between having a light source and not having one.

Do a light source hunt around your home in the daytime and then again at night, listing every source of light your child can find. Complete the worksheet together by sorting sources into natural and human-made categories.